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by munk-a 1556 days ago
For consuming information I feel like it's pretty realistic to roll one (I don't know if one actually exists) but for any data modification (like replying to emails) isn't any sort of Authentication going to be 100% infeasible due to the weaknesses of SMS?

You might be able to get by it with some sort of SMS signing system but you really don't have a lot of room to work with and it'd likely make it unreasonable to handcraft any of these messages.