Description of the 'payment flow' from TenX whitepaper:

1. User pays at the merchant using his virtual or physical TenX Card
2. The card network will send an authorization request to our [TenX] servers for the purchase amount
3. TenX will send an invoice through the COMIT network to the user
4. The user will then choose which blockchain asset to use for the payment and send the
   correct amount to TenX through the COMIT network
5. Upon receiving the corresponding amount for the invoice, TenX will authorize the
   payment to the merchant

So, the card itself doesn't actually hold any value even though it says "prepaid". It just sends requests into the network, similarly to a regular VISA linked with bank account. It's like a verifying tool allowing the moving of assets.

Hope this answered your question.

Not sure what the larger implications will be but this is going to be a big one.

I really think they have a good head start to become the best in their own area. I'm excited for 2018 with the further upgrades!