they'll ask for your phone, and see whose Facebook account it's signed into.
At first glance, this might seem like a huge invasion of privacy. It
is, but remember, clubbing isn't an inalienable right. To get into
venues, you've got to play by the venue's rules. And it's not like the
bouncer is going to read your messages—he's got a line of people waiting
that needs to keep moving. The real risk is that he'll silently judge
your profile picture and feed. It's even plausible that at certain
exclusive clubs, you won't get behind the velvet rope if you've got a
mediocre profile. But most likely, it's just a convenient (although
easily spoofed) way to let the legal people inside and keep the underage
If you've ever needed to hand over your phone to a very large and
intimidating person to get in somewhere, would you?