You can't always control that. Are you at a conference? Someone's making pictures? Woops. Plus, if you visit a large city, chances are there's security cameras everywhere.
Increasingly conferences are sensitive to this and provide some mechanism to signal that photographs are unwelcome.
The IETF began using coloured lanyards, if you picked the special colour this was a signal to not record your presence at the in-person event where practical. When they first began doing this somebody key (maybe a Working Group chair or Area Director? Anyway someone who'd obviously be on camera all the time so that not recording them is hopeless) picked that colour because they liked it, and then only realised later why everybody was freaking out. Amusing.
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You can't always control that. Are you at a conference? Someone's making pictures? Woops. Plus, if you visit a large city, chances are there's security cameras everywhere.
Increasingly conferences are sensitive to this and provide some mechanism to signal that photographs are unwelcome.
The IETF began using coloured lanyards, if you picked the special colour this was a signal to not record your presence at the in-person event where practical. When they first began doing this somebody key (maybe a Working Group chair or Area Director? Anyway someone who'd obviously be on camera all the time so that not recording them is hopeless) picked that colour because they liked it, and then only realised later why everybody was freaking out. Amusing.
Hardly the same as temperance with online presence