I used one of these in my first job (pdp11 sysadmin). I'd stick the report in a canister, place it in the tube and it would whoosh away across the factory. Th

I used one of these in my first job (pdp11 sysadmin). I'd stick the report in a canister, place it in the tube and it would whoosh away across the factory. They are still used today by Tesco to take cash from the tills up to accounts.