A pub has installed a swipe card machine that can be used to dispense beer when it is busy. Landlord at the South Yorkshire establishment Dave Barron says measures are in place so that customers could not abuse the system and staff could monitor issues such as drunkenness. "The machine is in full view of staff at all times, and there's also a method of blocking a particular card, so if anyone has had too much, we can block that card," Mr Barron commented.