CartPicker

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.

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Use Responsibly :)