I Made a Esp32 Based Phone-Like Personal Security Device

A few month ago, I became paranoic about my accounts protected with 2FA, I am storing most of the keys on my phone, so this is not really safe, of course i know bout Yubikey and other passkey devices, but I wanted something diy and cheap,and something that anyone who also cares, can create.

I was inspired by ledger wallet, but that thing is too small and has no place for big battery so I've decided to go with more phone-like design. I really wanted to keep it as simple as possible, but at the same time, keep whose who want to build one excited with the process, so there is not so much parts to solder, but enough to keep you busy for 15 minutes. The software is pretty simple, just flash and configure the device.

After a few days of learning how to design a pcb i've ordered it and iterations started. After third iteration I finally got the device that I imagined. Right now, I'm testing it almost every day for 2 month now, the battery is about 20% left as indicator says so I think this thing can last 2-4 month depends on how often you use it.

Anyways, it was my first hardware project, it most likely has a lost of flaws, but i've made what I wanted, it fulfills my needs and if you want to, you can make your own.