

3·
4 days agoFor gifts specifically, the giver is supposed to pay the tax.
Everything else you listed is taxed as income (with different rules depending on the source) just like you said. You could also add inheritance (unless special loopholes are used) and proceeds from the sale of illegal narcotics.
Your phone’s camera should be able to “see” the IR from security cameras and IR remotes. That can give you a sense for home much and in what direction they emit.
The sensitivities will be different, your phone should still help you some.