By Benedict Tetzlaff-Deas Criminal gangs are “embarrassing” prison authorities by using legal loopholes to smuggle devices and drugs into jails, experts have warned. Investigations have shown a thriving community of Instagram pages offering inmates a plethora of gadgets and drugs to provide a “better lifestyle” behind bars. These are hidden inside privileged legal documents to bypass checks. Mundane, everyday items are also being used to get contraband inside jails. Adverts on one page show WiFi dongles, games consoles and smart TVs clandestinely stored inside alarm clocks, beard trimmers and …