Thanks, I will add it to my backlog
Another hardware wallet for your backlog coming soon - RingWallet.
It should be open source and it can even store information from virtual debit cards for payments:
https://ringwallet.com/PS
I know this is not the first ring shaped hardware wallet, Satochip and Tangem worked on their version, so it's now race who can release working product with better price.
That was really fast. Thank you. I appreciate it. We'll be releasing and shipping the rings by end of this year. The software will eventually be made open source yes, we're just consulting with some lawyers for now to see if there's any way to protect the code against commercial use for a limited period of time; say 2 years, similar to how Uniswap v3 was released, in order to have time to work on future version before people just fork it and spin their own. Ideally we should ship the first batches of the product before end of Q3.