CartPicker
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The only keychain tool that unlocks every shopping cart lock, including side-drawer types other tools can't touch.
- Rating
- 5 / 5
- Likes
- 7
- Downloads
- 59
- Makes
- 4
- Views
- 392
- Reviews
- 4
Updated at source:
Model information
- Source
- Printables
- Category
- Other Gadgets
- License
- Open Community License v1.1 + General Attribution v1
CartPicker unlocks any shopping cart — coin-slot or side-drawer.
Most cart coins only handle the simple push-lock type. CartPicker also unlocks side-drawer coin mechanisms that other tools can't touch. No coin needed, nothing to carry loose in your pocket — it folds flat onto your keychain and pops out when you need it.
🔗 cartpicker.oktkas.cz — full instructions, photos, and both lock-type walkthroughs
Features
Unlocks standard push-type coin slots and side-drawer locks
Insert, unlock, remove immediately — no need to leave it sitting in the lock
Tested across Europe with various coin sizes and cart manufacturers
Folds flat onto a keychain, no separate coin to lose
Printing instructions
Use PETG and default settings with 3 perimeters. Print as-is and fold the arm into the sheath afterwards. The .3mf file (PrusaSlicer project) already includes all the required settings — pick the CartPicker file by default.
Pro tip: if you have CF Nylon, go for it.
NFC Tags
The CartPicker NFC files have a little pocket inside for embedding a 20×10mm NFC tag. The .3mf PrusaSlicer project file already includes a print pause so you can drop the sticker in mid-print.
You can get these stickers on Amazon / AliExpress etc. and program them with any NFC Tools app — contact info for when someone finds your keys, a link to your site, whatever you like.
Use Responsibly :)
