I have a selfie stick with a Bluetooth remote, but, to be honest, I rarely use it and I share the annoyance of those who they annoy. After the Sistine ceiling was renovated in the eighties (I think), a Japanese TV company who had helped to fund the restoration had some kind of copyright on the ceiling, for a time. But that has now lapsed. You WILL get shouted at in there if you point your camera but you CAN take photos. You've bloody queued for hours, paid a fortune to get in, have been forced to overdress and have been herded into an extremely overcrowded room in a shameless attempt to rip as many people off as possible. Take your pics shamelessly and enjoy them!