I am interested in tarts devices (FCC, CE etc… great!) very much but I am very concerned about security, knowing that it is not possible to add security by ourselves (no permission to reflash modules).
Lots of problems could came from this situation:
1. data secrecy – no, right?
2. data freshness/replay attack – no, right?
3. source authentication – no, right?
4. detect message modification – no, right?
With all my due respect. Hardware seems very, very attractive to me and to my company but if no security is provided at least it would be interesting to be possible to reflash nodes and where each one could add security services he/she needs. Why not?
Does anyone knows great alternative hardware like this one?
I guess you can try looking at monnit sensors. They are more expensive than tarts, but they were the once who, in collaboration with tarts sensors, developed the IR sensors. Try looking at their webpage.