Computer hardware for communicating audio, video and data between computers via a global computer network, wide-area computer networks, and peer-to-peer computer networks; Computer network hubs, switches and routers; Computer network routers; Mobile hotspot devices; Near field communication (NFC) tags for making mobile payments, providing advertising information; Network routers; Network servers; Telephone call routers; VPN (virtual private network) hardware; Wide area network (WAN) routers; ...