How to check if a HEX-V2 interface is genuine and the number of VIN remaining?
Assuming you have it in-hand, plug it into your computer (no need for a car), start , and do [Options] -> [Test].
will identify a real HEX-V2 as a HEX-V2 , but fake one will be identified as a HEX-USB or HEX-USB+CAN because that's what they emulate.
If the HEX-V2 is genuine and has a VIN limited license, the VIN status will also be shown.
If you do not have the interface in-hand and this is something you're contemplating buying, ask the seller for a screen shot like the above.