Still one of my most unnecessary projects. My apartment complex wouldn't let people have more than 1 garage fob per resident. So, I reverse engineered mine, bought some cheap fobs on Amazon, then wrote custom firmware for them that imitates my apartment fob.
@malwaretech
Also I wonder it that's a physical issue (antenna size) but no really compact (CR2032-sized, maybe a bit thicker) garage fob on the market. If there isn't a physical issue with having really compact programmeable fobs it could be a nice FOSS project