It is a great video interview and you get a good overview of the Tachain project. The COO explains the different possibilities of advertising and transport. I follow Tachain for some months, but I don't think that it is a riskfree investment.
Yeah agree on you, good point strategy in advertising since a lot of people are no addicted to their phones, its a good strategy to put the advertise it self in the devices. And investing in crypto is already risky since there is a chance that a project turn out to be a scam, let's hear what the other says about this one.