> Is the device hackable? AFAIK not at this moment. The firmware is minimal. It is a relatively new device
It is just a package around an inexpensive FPGA chip. Published and un-published attacks against it exist. For these reasons the TKey developers call out "[a]ll physical and electrical attacks applied to the board [are out of scope]" in the threat model.
https://hackaday.com/2018/09/27/three-part-deep-dive-explain...
https://github.com/sylefeb/Silice/blob/draft/projects/ice40-...
> There are protections against opening it up.
I'd love to see photos if yours is any different than what is on the website.