Hi,

The notion “buying data” is nothing else than getting the right from your telco to send and receive bytes from and to your phone via the telco’s network. The issue DENT solves is, that - unlike fuel - you don’t really own the data you bought, for example you cannot just give it to someone else, or - even worse - you lose the data you bought at the end of the month if not fully used up.
So selling mobile data is therefore nothing else than handing over the right to use the telco’s network from you to someone else, for the specified number of bytes. Technically, this is realized by removing the amount of bytes from your telco account, and adding it to the other person’s telco account.

This already works inside the telco network by some telcos you can for example move data allowance between family members, so why not also inside and outside the network?

Cheers, Mikko