High Resolution JPEG Picture of Free wifi internet connection sign on coffee shop entrance. Illustration of free wifi internet connection for cafe visitors and clients. Computer security system used to secure internet connection on hot spot cafe. Authentication and access control are often combined into a single operation, so that access is approved based on successful authentication, or based on an anonymous access token. Authentication methods and tokens include passwords, biometric scans, physical keys, electronic keys and devices and monitoring by humans and computer system. [531476601] stock photo
