MySensors_SecureKeyfob A keyfob for MySensors using the RFM69HCW and the ATSHA204 for authentication Uses Sparkfun library for RFM69HCW MySensors library for ATSHA204 Fits into enclosure listed as CamdenBoss keyfob 2955-20R-5 RND 455-00014 (in Germany e.g. from Reichelt)