At a time when people were still wearing watches, you could have an alternative time standard, on your wrist, in actual hardware. Nowadays, you could have that

At a time when people were still wearing watches, you could have an alternative time standard, on your wrist, in actual hardware. Nowadays, you could have that easily as an app on your smart watch, but of course, there are far fewer people wearing smart watches. Also don't forget the egalitarian approach of using a time format that's equally foreign to everybody.