Fob

Tools and intructions to put important QR codes and other images onto a small, light, always-on, never-runs-out-of-power epaper keyring.

The method could be used to encode any information in a QR code eg Boarding Pass, Concert Ticket, etc or a small image (eg chess puzzle use-case in photo)

Hardware (and where to get a Fob)

A NFC powered epaper display. You can get one here.

Install (only needed if you want to make QR codes)

This step is only needed if you are generating a QR code. If you already have an image, skip this part and go straight here . Install the required module, clone this repositiory, move into the cloned directory and copy the example config file with

pip3 install qrcode
git clone https://github.com/veebch/fob
cd fob
cp config_example.yaml config.yaml

QR code

• Scan your QR code using a QR-code reader app on a smartphone ( iPhone | Android )

• Scanning the code will produce a long string of text. Place this string of text into the file config.yaml and save it

• Run the code python3 fob.py, this will produce an image of a QR code called certificateqr.bmp

Image Transfer

Copy to the Fob using an NFC writer app ( iPhone | Android )

(You can generate a chess puzzle image at the delightful Yet Another Chess Puzzle Database)

License

Code published under a GPL 3.0 licence