Agreed on this one. It would be dangerous to use phone inside our car to get the gas tank filled or near the gas station. It's not the use of phone that will ignites fire I think. But because cellphone's electrical current is enough to jolt a small detonator charge. But, if we're using a barcode, it does need a connection as well, do we not?
Not to mention the rate could changes every mins and any time. Nowadays we pay from our cards, if there's a bank that could store cryptocurrency and that one has a card like credit cards perhaps, it might work the same I think.
But it's a great idea nonetheless.
Yes. It's dangerous to use phones in a nearby gas station. But a workaround for this, would be to place an automated cashier before the entrance of the gas station. If you don't pay with your smartphone, you won't get entry to the station. It's as simple as that. With so many businesses and mainstream corporations interested in crypto and Blockchain tech, I wouldn't be surprised to see a blockchain-based token that would represent "real gasoline" sometime in the future. As long as there is demand for digital assets in the mainstream world, this type of business venture will be successful in the long run. This would definitely go great with government-backed digital currencies than anything else. As we enter a cashless society, the need for credit cards and physical cash will be no more. People will either use mobile devices for paying at any store, or simply an implant on their own hand.
There are various ways to do this, once the blockchain-based "gas" token is created within the mainstream world. While the idea is there, it's up to mainstream companies to make this a reality. There might be other important things to focus besides this one. But, we cannot discard the possibility it might happen sometime in the future.
Nonetheless, I look forward for self-serve gas stations which accept crypto (or tokens) as payment. There could be an automated cashier too, which eliminates the need for human intervention. The future is bright for everything shifting from the traditional system into one that's backed by the Blockchain. Just my opinion