Archive for the ‘Lockpicking’ Category

WHY2025 Challenge: Trash or Treasure?

Saturday, August 23rd, 2025

Yuri brought a dual custody money box to the What Hackers Yearn 2025 (WHY2025) lockpicking village, and challenged us to pick it. Several lockpickers gave it a fair attempt, but with limited tooling the box remained shut. After WHY2025 I’ve brought it home, made custom lockpicks, and eventually managed to pick it and open the box. This blog is the complete story, from receiving the box to making a key for it.

WHY2025 (https://why2025.org/) is a quadrennial outdoors hacker event, a conference where people teach other people. This edition was from the 8th to 12th of August 2025 in Geestmerambacht in the Netherlands. Toool has a long track record of teaching lockpicking at these events. When you become a regular, others will start to plan for it as well. Several hackers brought the locked objects for us to pick.

One such challenge, Yuri’s box with two keyholes and just one key, appeared in the village. Yuri wrote on the chest, ‘Trash or treasure? Let me know if you open it!’ and included their contact details. After several people attempted the box, we were nearing the end of the event. I’ve contacted Yuri and discussed options. Them was fine with me bringing the box home to give it a fair attempt.

The chest was curious to me as it has two keyholes, which can be a dual custody, a mechanical version of the four eyes principle. To open such a system, both key owners need to be present with their key. Several variations exist. Either where key A or B open the box, where key B is used after key A, and very rarely the dual custody where key A and key B need to be present at the same time. Without any knowledge of the internals of this specific chest, your guess will be as good as mine. My guesses were that the key didn’t belong to the chest, second that both locks are independent, and third that one lock rotated clockwise, and the other counterclockwise. Of course, all three assumptions were wrong, as we’ll see later.

I’ve started my investigation by making a few simple lever wire picks, and quickly progressed to making custom 2-in-1 lever tools. The process is quite nice, even if it takes some trial and error to get right. I’ve ended up making two, one from brass and one from 304 stainless tubing. For the picking tips, 1.5 mm thick brass was cut into 4mm wide strips. One side gets a concave cutout to match the shape of the tube, to which it is silver soldered with high heat. The tips are then cut to the correct length, and rounded over with a file. While these tips can be shaped with needle files, it’s a tradeoff as they can’t stand much abuse.

After attempting for an evening without luck, picking, I chose to use a fiber scope to look inside the lock. It was slightly tricky to position the fiber and interpret what I was looking at, but I eventually determined there was just one bolt and both locks should rotate clockwise. I was slightly confused by the left-hand side (LHS), which appeared to have a form of warding in the keyway. This turned out to be a stop for the LHS key.

I’ve managed to pick the lock by inserting and rotating the key in the LHS clockwise, and inserting the fiber through the same keyhole to observe the lever at the RHS. With this, I’ve managed to pick the RHS of the lock. Even with all of this, it still is not an easy lock to pick.

The box was quite dirty inside and required a quick clean and some disassembly. In the pictures below, you can clearly see the mechanism, a ten lever lock spread over two keyways. With the lock open, I’ve opted to design a quick lever lock key builder in OpenSCAD and printed a fully functioning key. While not the most durable, in the correct printing orientation, PETG is fine for a temporary key. The key can later be copied to a metal blank.

The box is a treasure, and the box held Fl. 0.31 inside. Three dubbeltjes, and a cent. This would be about €1 in 2025 after inflation. The newest coin was from 1959, which usually means that the manufacturing date is before ’59. Digging further, I’ve found the markings “D.R.G.M. 1468402” – which is the German patent number from 1939 according to Wikipedia. Other scribbles were not too useful. However, a tiny bird, not even five by five millimeter, whispered the chest was made during WWII.

Through the great invention called the internet, I’ve found an owner of a similar chest. Their box was stamped 1940, with the ugly bird, and the full name of the factory, “Louis Walther & co, Chemnitz”. The document below from https://sachsen.digital/werkansicht/233660/1 completes the history for me. While we still don’t know why Germany desperately needed dual custody geldschranken, what the patent was for, or how it traveled to eventually end up with me.

Blog CCBY4.0 Jan-Willem Markus @ Toool Blackbag. If you want to play with the chest someday, do let me know. You may borrow it without keys, nor tools, so you can open it from scratch 🙂

Toool competition – we have a winner!

Wednesday, July 30th, 2025

The Toool lockpicking competition is held yearly from 2004 onwards. About 25 locks are selected and it is up to the Toool members to try and pick them at Toool gatherings. They can spend as much time as they like, and can retry to open a lock as often as they like. Scores are given out depending on opening speed, 10 points for the fastest person up to 1 point for the 10th time on the lock. Since some locks can be opened with just a single rake, times under 5 seconds all count as the same time.

Every year, locks are selected on what we think are good locks, meaning: they cannot be opened in a single rake, but can be opened within the year. This year, there were 26 locks and the mix looked like this:

The locks from the 20th Toool NL competition. More details and pictures are found on: https://toool.nl/competitie2025/

Having won 18 of the 20 competitions so far, I was keen to win again, but everybody is getting better! I am a very fast picker, but it is not just speed, it is also making sure you open all the locks. In the end, there were a few locks that were only opened by 5 or less people.

The Yardeni and Sargent looked simple, but turned out to be hard. The Abus XP1 was left unpicked for a long time, mainly because it has a reputation of being very hard to pick. When it turned out to be (quickly!) pickable, it got 5 openings.

Then to the hardest locks. The EVVA 3KS was my personal nemesis. There is only so much time you can practice on these locks (only during gatherings). For the first time, I resorted to practicing at home. I took an EVVA 3KS I had in my collection, created specialised picking tools and practiced until I could open it. However, the 3KS in the competition would not budge. The main problem being that, when moving some sliders, the lock would reset (which my own 3KS would not do). I’ve spent quite a few hours on this 3KS to no avail. It was opened by Henri who became third, and by Tom who won this year’s competition by 1.5 point. Congratulations Tom! The three of us opened the same locks (except the 3KS for me) but I scored higher than Henri because of my fast openings on the locks I did open.

Since a 3KS is easy to disassemble without having the key, I took a look at the insides, to see if there was anything that can explain the resetting of the lock, but everything in there seemed very normal.

These are the two locks that no-one opened. The TrioVing does give feedback while picking, but nobody succeeded in opening it. The DOM was picked into a false set but also never opened. The pins have a shape that makes picking quite hard.

I am looking forward to the next competition. This one was exciting right until the end. The last gathering I decided to not work on the 3KS but try and gather a few points by improving times on simpler locks. At the start of the gathering, I was only half a point in the lead, and was able to gain another point by improving my time on the Benco lock. The Benco I don’t like, as I don’t really get a good feel of how to pick it. Tom was trying to open a new lock (such as the DOM above) for maximum points, but then changed strategies and improved his time on the Desmo, giving him a 1.5 point lead. I only realise now, writing this, that improving my time on the Benco with another 2 seconds would again have been enough for the win. That is how close this years’ competition was!

If you have locks you are willing to part with, please consider donating them to Toool for the next Toool NL competition. We are particularly looking for the difficult locks. Equivalent to Desmo, 3KS, Trioving, and IX6. As we are building two cases, one for us and one to share with other Toool organizations, two locks would be ideal.

Walter.

https://toool.nl/competitie2025/

January Challenge

Sunday, February 2nd, 2025

Jan-Willem wrote about the UKLS January Challenge last year. This year, Thice decided to participate, as a way to learn how to pick more types of locks. I myself started a few days too late to make it a real January Challenge. Nkt sometimes skipped a day, but then made up for it the next. But that is not a problem, the great thing about doing such a challenge is that you get to work on different types of locks, even locks you haven’t picked before. It is a nice boost when at the end of the challenge, you’ve learned some new skills!

These were the ones I picked:

Thice picked these:

Nkt not just picked pin tumbler locks, but quite a few lever locks as well.

Nkt kept the best for last, however!

Join next year if you can, or just start now! Just pick a month, or a number of days, and see where it will get you.

Walter.

Dutch open lockpicking 2024 at LockCon

Wednesday, December 4th, 2024

The Dutch open lockpicking is one of the largest lockpicking competitions of its kind. In several rounds with ever more complicated locks the participants attempt to open the locks as quickly as possible to secure their place in the finals.

The qualifier consisted of six tables with ten participants at each table. In ten rounds of five minutes each, the participants decided who continued into the quarter-finals. The best three of each table, eighteen in total, continued. From there, more difficult locks were introduced. The competition went from eighteen to nine to three participants. The complete rule set can be viewed at https://blackbag.toool.nl/?p=4652

For the five minute locks we had a wide selection consisting of, Eras, Destil, Kibb, Yale, Mastermate, Dom, Basi, Nemef, and several others. For the fifteen minute rounds we introduced more difficult locks, including Winkhaus, CES 1SB, Gege ANS2, DOM Plura, DOM Sigma, Oxloc, and more.

While we cannot make guarantees, we strive for consistency.
You’ll very likely encounter the same or similar locks in the next competitions at LockCon.

The final score of the Dutch open lockpicking at LockCon 2024.
Dutch open lockpicking 2024 at LockCon. Henri (3rd), Nitiflor (1st), Walter (2nd)

Nitiflor won the competition by opening the most locks in the finals. He won the Multipick Elite Locknoob set with 39-pieces. Walter placed second and picked the Multipick Quick easy pro key duplication kit as his prize. Henri received a Sparrows Kirigami lockpick set as the third place winner. These prices were kindly sponsored by Multipick and Sparrows.

We are hosting a lockpicking competition like this one almost every year, and we hope to see you at the next one.

Scores of the half finals for inspiration

Toool NL competition

Wednesday, December 4th, 2024

In the Toool NL competition, the Toool members compete by picking a selection of locks during Toool meetings. This year was the 19th Toool competition, with 45 meetups and at least a hundred hours to attempt these locks. However, only the quickest opening time for each competitor counted.

The points are assigned by opening times, where the quickest opening gets ten points, the second-quickest gets nine points, and so on. Sometimes points are shared when several people have the same opening time, or opened the lock within five seconds. (We count these as the same opening time, as we have a lockpicking competition and not a stopwatch operating competition.) The full breakdown of the competitions, locks, statistics, and the rules in Dutch can be found on. https://toool.nl/competitie/

The competition went strong, from the first meetup after LockCon already many competitive times were set. More locks were opened every meetup, and the opening times were significantly reduced. The locks which were predicted to be difficult were not, while difficult locks were underestimated. The competition remained close until the end. The analysis on lock difficulty is found at https://blackbag.toool.nl/?p=4684.

Screenshot of the competition score. https://toool.nl/competitie2024/

Walter won the competition and received a Multipick Ares Disc detainer lockpick. Henri, with second place, chose the new Multipick Elite dimple picks community edition. Tom, who place third, won the Sparrows Vorax set. These prices were kindly sponsored by Multipick and Sparrows.

The next competition has started. Do you want to join this one as well? Become a member, and join us at the Toool meetups in Amsterdam and Eindhoven. May the best picker win. https://toool.nl/competitie2025/

Toool NL competition 2024 – analysis

Wednesday, November 20th, 2024

The 19th Toool NL competition is concluded (https://toool.nl/competitie/). The Toool members worked on lockpicking a set of 27 locks over a period of one year, and registered the quickest opening times. The full competition details can be found on https://toool.nl/competitie2024/.

Before we started picking, Walter asked the Toool members to make a guess on the best opening times for each lock. With this data he expected to see which locks are perceived to be difficult, but were not, or vice versa. Four lockpickers made their guess, and we analyzed the data.

Please note, the final opening times are heavily skewed in favor of short opening times, as the locks are picked several times at the Toool meetups and only the lowest time counts. A lock may be opened in 15 minutes during the first attempt, but during several meetups the final opening time can be reduced to five seconds. Many of the locks in the competitions are perfectly suitable locks, and us opening a similar lock in five seconds, shouldn’t be the reason to replace yours.

We found this data isn’t easy to visualize in a single graph, as each lock is unique. We chose to break down the analysis results and report on the five most underestimated locks and the five most overestimated locks.

CylinderBrandFastestLockpicker 1Lockpicker 2Lockpicker 3Lockpicker 4
T1906Abus E6066.5074.00630.005.0020.00
T1907GTV36.435.00940.0030.0015.00
T1910EVVA39.00420.00304.0060.0015.00
T1915Mul-T-Lock Classic216.04360.00312.00120.0045.00
T1924Sargent27.64150.00925.005.005.00
Underestimated locks from the Toool NL competition 2024
CylinderBrandFastestLockpicker 1Lockpicker 2Lockpicker 3Lockpicker 4
T1913DOM iX 5KG47.41240.00985.00120.00200.00
T1916ISEO8.31180.00781.0060.0025.00
T1918ASSA 5005.00120.00610.00180.0045.00
T1919Best SFIC5.00240.00558.00180.0020.00
T1926Medeco Biaxial5.00132.00121.00600.00180.00
Overestimated locks from the Toool NL competition 2024

It is quite interesting that only a few locks were underestimated, while most locks were overestimated. Several of the underestimated locks have a tight keyway, but this in itself is not a guarantee for the lock to be difficult. For example, it’s common for the old Evva to be full of standard pins. The biggest surprice is the Sargent lock, which is much better quality than they are usually given credit for.

On the overestimated side, we have locks which are usually quite secure. The Medeco has good tolerances, and the SFIC rely heavily on their double shearline for security. While the Assa 500 and DOM IX are well-made locks from Europe. However, with the right tools and techniques, they just opened without too much difficulty. (The Medeco was raked several times.)

This analysis and report may not have solved the mystery of why some locks are easy, and other locks are difficult, but it was interesting to analyze these nonetheless. We will not take guesses for the 20th Toool competition, but do take a look. https://toool.nl/competitie2025/ We chose to save all the keys of this new competition, which enables us to see if the bitting is what makes the difference after the competition concludes.

LockCon 2024: Dutch Open competition rules

Saturday, September 21st, 2024

We are excited to announce the competitions hosted at this year’s LockCon. There will be the usual lockpicking and impressioning competitions, as well as a return of the disc detainer picking competition. You can also test your safe manipulation skills, join the lever lockpicking competition by Nigel Tolley, and play multiple games by our friends from Foxpicks.

The smaller competitions will be open from Friday evening till Sunday. Each of these competitions reach their conclusion during the finals on Sunday. This can be either a 1:1 with the best pickers, or a first to open wins where the best are competing all at the same time.

Dutch Open Impressioning & Lockpicking

The two main competitions are impressioning and lockpicking, where each takes a whole afternoon. The main rules are found in the pdf below, but for this year’s event we like to share our competition planning as well.

The Impressioning competition will be a standard competition with a qualification round, and two finals of six people each. We want to reduce the luck factor in the competition. E.g. consistent opens are a better demonstration of skill than a single quick open. For this, we have split the qualifier into two. You will now have to open both Abus C83 locks within two 30 minute attempts. The finals are, as per usual, on Abus C83 as well. The locks and blanks are sponsored by Abus!

The lockpicking competition is a standard competition with a qualifier and a bracket of two and three people. The qualifier has six tables of at most ten people per table. This qualifier is five minutes per lock, and in total you will pick ten locks. The best three from each table continue to the bracket. The bracket is played in nine groups of 2, three group of 3, and a final with the last best three lockpickers. Each round of the bracket is 15 minutes per lock.

Further details are below.

Dutch Open Disc detainer picking

Also this year, we have a disc detainer competition. We have learned from the competition last year, and have updated the rules accordingly. We have chosen some great locks for you to pick. This year we have included the Discombobulator from Opsasec in both in front and rear tensioning models, but you can also use the Sparrows 2-in-1 disc detainer lockpick.

Lever lockpicking

Nigel Tolley hosts this year’s lever lockpicking competition. Try your hand at lever lock picking! Various lever locks from the UK will be attending LockCon, for your bafflement and amusement. Try picking a selection varying from 2 levers, uncurtained without anti-picks, up to 5 lever curtained with anti-picks, with various tools supplied. Nothing too hard, and everyone should get at least one open.

The winner of each round goes through to the final, there will likely be 5 rounds of 5 locks for 5 minutes. The final setting will be communicated so everyone is on the same page.

Timing will be like the cylinder picking, call out “open” when you’ve opened your lock. The locks will be modified to not open fully, so expect the bolt to remain sticking out a little when unlocked – but don’t worry, it’ll be obvious! Have fun. Please remember, ‘it’s about manipulation, not brute force.’

There aren’t many rules, but if you break a tool, you’re out!

Foxpick’s games

Foxpick will host two lockpicking games during LockCon. In Pic Tac Toe, you will play a head-to-head competition in a game of tic-tac-toe, but to move you’ll have to pick the locks. For the second game, Felix’s Breakout, it’s your goal to free Felix the Fox from jail! Both games are very exciting, and we hope you will enjoy them as well.

Foxpick will provide all the tools you need. This helps to keep it an even playing field for everyone. Further details of the game are explained before each player starts.

Safe manipulation

To celebrate the skill of safe manipulation, we have included it in this year’s competition list. We are working with S&G 6730, for which we ask you to find the combination. The locks spin true, and read very well, so don’t let this opportunity pass!

LockCon 2024 announcement

Saturday, March 23rd, 2024

Dear friends,

We are happy to announce the date for LockCon 2024.
The event will be from 17th to 20th of October 2024 at De Werelt Garderen.
This is the same venue as last year, which was then known under the name Westcord Hotel Garderen.

Registration isn’t open yet, but hopefully this announcement will help you plan ahead.

Hopefully we will see you in October, LockCon Team

Challenge completed!

Friday, February 2nd, 2024

Walter and Jan-Willem successfully completed the UKLS January challenge, and like to share the lessons learned as well as show off the 31 locks. The challenge is to open a lock, every day, for the days of January. This is a good way to get in the consistent lockpicking practice, and challenge yourself to pick more difficult locks. You can find a longer explanation of the challenge in the blog released earlier this year. (https://blackbag.toool.nl/?p=4023).

Picking a lock a day has helped me to get use to my new thick acrylic Moki handles, and taught me a few new picking tricks. As the month progressed, I attempted quite difficult locks, of which most didn’t open, at least not right away. For example, I’ve played an hour a day with a particular BKS, which still remains shut. When a lock didn’t open after a while, I frequently tried another lock, if not to keep the streak.

Walter picked a DOM, Pfaffenhain, Nemef, Mul-T-Lock, Wally, Anker, EVVA, ISEO, Gerda, CES, Ivana, Geba, Novoferm, Wilka, FF, Abus, Thirard, Yale, Vachette, Lips, Pratic, S2, Sobinco, Mauer, Corbin, BASI, VBH, Zeiss Ikon, Destil, Kale and an M&C.

On the other hand Jan-Willem picked the Kibb, Dom Sigma, Abus C83, MD, Anker, CAS, Gerda, Lockinox, Nemef, Pfaffenhain, Kraft, Nino, Gaba, (another) Lockinox, Bern, Yale, Axa, S, Era, UAP, Evva, M&C, F (can’t recall, federico? fred?), Iseo, Fake Assa 700, (2nd) gaba, corbin, mila, Ivana, Favour, and a SEZAM cylinder.

By Jan-Willem. Pictures CCYBY4.0 by Walter and Jan-Willem Toool Blackbag.

UKLS January challenge

Monday, January 1st, 2024

The January challenge is a lockpicking game ran on the UKlocksport forum. In short, the challenge is to picks/impressions/opens one lock a day for the days of January. The rules say to post pictures daily and not to play catch up. As in, to pick a lock every day, not just 31 in the month of January.

You can extend your lockpicking streak, if you so wish. Some people extend the streak by a few days, others do a full year. One exemplary lockpicker, Toni, picked a lock a day for 1093 days straight, which is three days short of three years! Furthermore, Toni started a new streak of several hundred lock in 2022, as well.

The last two locks of the lockpicking streak by Toni are both sides of the same DOM Plura.
Lockpicking collage of the special picks from Toni from the first 365 locks.

I’ve used the January challenge as a good excuse to learn a new skill. For example, in 2018 I’ve impressioned a lock a day in January. In 2019, I’ve impressioned a dozen, and picked locks for the remaining days.

It’s very easy to start the challenge, and then let it drop when that one lock doesn’t open. So to help you along, here are a few tips and tricks.

  • Don’t set the bar too high, as the difficulty isn’t as important for your daily lock.
  • Try to incorporate lockpicking in your daily schedule, for example to pick your lock while waiting for public transit, or during a coffee break.
  • Plan out your month so you have enough easier locks for the busy days of the month.
  • If you challenge yourself with an F3D, have a contingency when it doesn’t open that quick, as someone on YT.
  • Skipping posting is better than skipping a pick.
  • Lastly, share your picked locks, no matter if it’s a steak or not. Celebrate the victories will help you stay motivated.
The two rings are easier locks than the box on the right, but at 25g each, you can’t beat the cores of Master Loto for weight. Toni took a box of these to keep his streak alive during holidays abroad. (Do check the country’s stance on lockpicking, though.)

With picking a lock a day, you built the lockpicking muscle memory. We as Toool advocate for using the three O of out name, oefenen, oefenen, and oefenen. Which is the Dutch word for practice. In English, you could say to pick locks over, over, and over again.

If you are inspired, please join the UKLS forum, and start sharing your picked locks. I would like to extend the invitation to any lockpicking streak, also if your streak starts on another date. Next to practice, share your achievements with the community.

This Kibb is my 1st pick of the year.

Pictures from Toni have his copyright. The rest are CCBY4.0, as per usual Toool Blackbag license.