Our wallet review process
We examine wallets starting at the code level and continue all the way up to the finished app that lives on your device. Provided below is an outline of each of these steps along with security tips for you and general test results.
Application build test result
JuBiter Blade is a credit card sized device with buttons and screen that connects via bluetooth to the companion app.
On mobile, these companion apps areand .
The Android app is not available since 2021-09-06 so it’s not clear if they are still in business.
Apparently there was an issue with their firmware so they urged people to update it:
3 days ago
Therefore, please update the MISC application (version 1.0.05) in your device to the latest version (1.1.08) …
“3 days ago” would be 2021-09-05 but changing our system date to August and reloading the page gives us the same “3 days ago”, so it’s not clear from when this warning or the firmware update would date.
Their desktop companion app (available only for Windows) was last updated more than a year ago, on 2020-07-01.
Anyway, as there is no hardware wallet source code to be found, this product is not verifiable.
Do your own research
In addition to reading our analysis, it is important to do your own checks. Before transferring any bitcoin to your wallet, look up reviews for the wallet you want to use. They should be easy to find. If they aren't, that itself is a reason to be extra careful.