One-time key stash

thingiverse

I need to hide my key for emergency use. Because I afraid 'smart lock'(retrofit) is not smart. Requirements - It can reveal that someone found and touch it - You have to break it to get the key and it's hard to recover - It can withstands rain and protect key from humidity Solution - When removed, a magnet inside will fall down and appear in the window - You can break it with bare hands to get the key(like a piggy bank) With functions of the smart lock, I can check status history of the lock even in real time. With this thing, now I will never meet the thief or robbery unexpectedly in my house. Of course, need not afraid rebellion of HAL-9000. We also recommend adding some secret gimmicks to increase your security level. Additional information You need get some stuff to make this thing. 1. x3 magnet diameter:13mm thickness:2.5mm 2. magnet sheet (thickness: less than 1.0mm) 3. masking tape for sealing gap 4. some fluorescent paint How to built and use, please check YOUTUBE movie below. https://youtu.be/NhIxW7LgsMI