Well,you could go to like an empty place like the auditorium(if your school has one ,if not somewhere else that is not strictly off-limits but empty)and like "sneak"around.I think that would be cool and a bit spooky,and if you have a friend with you it'd be like you;re spies on a mission.
Sneak it in.
No.
It is unlikely to become a billionaire without anyone knowing, as accumulating that level of wealth usually involves significant business dealings, investments, or public recognition.
Invent mean that you make the object all by yourself without anyone knowing it, but discover means that someone already made that object but you just find without anyone knowing it.
Don't tell anyone
Exercise with nobody around
don't tell anyone
You can hire a private detective and he'll search for him for you
Sit facing the door with your computer so you have time to pretend to be just sitting there if someone comes in.Always and i mean always be prepared to drop the laptop on the floor if you dont want to be caught and play at night when everyone is asleep
Through ultrasonic voices TV radio media etc.
If the account is not protected then you can view it without anyone knowing.
cellphone