Sort:  

Well...it seems pretty simple.
There are already off-line wallets that are the size of an SD card. It wouldn't be that difficult to have a NFC enabled or a small wearable with a screen to do the same as other off-line crypto wallets.

I see that it will only use Dash.
So, I think my idea is better. Just creating a crypto off-line wallet that you wear.

I like that idea! Thank you for sharing!