Best approaches to using the technology safely and securely

 ALOHAnet pioneered the concept of wireless packet communication over a shared medium. It successfully demonstrated a novel approach for multiple devices to utilise a shared communication medium. Before ALOHAnet, a node on a network would talk directly to a node at the other end of the link. ALOHAnet nodes communicated on the same frequency by allowing each client to send its data when it was ready. The revolutionary ALOHA protocols devised by the ALOHAnet team provided for an acknowledgment/how hard is computer sciences cheme to deal with collisions. This approach radically reduced the complexity of the protocol, and was the basis for the subsequent development of Ethernet and later WiFi.

QR codes have a variety of uses, from storing bank information for payments to ordering at restaurants or joining a WiFi network. But the easy-to-use codes don’t come without security risks – a concern highlighted by numerous incidents in 2020. The Daily Swig takes a closer look at the potential security issues surrounding QR codes and the best approaches to using the technology safely.