5 ms·
Passive Wi-Fi
- cmdrfred 11y agoA better article about how this works: http://abc.cs.washington.edu/ http://abc.cs.washington.edu/ "As computing devices become smaller and more numerous, powering them becomes more difficult; wires are often not feasible, and batteries add weight, bulk, cost, and require recharging/replacement that is impractical at large scales. Ambient backscatter communication solves this problem by leveraging existing TV and cellular transmissions, rather than generating their own radio waves. This novel technique enables ubiquitous communication where devices can communicate among themselves at unprecedented scales and in locations that were previously inaccessible."
- btown 11y agoDoes this impact latency and/or bandwidth, since packets can only be generated when environmental conditions allow it? If it's relatively low-latency, I could imagine very low-power e-ink wearables that delegate processing to phones and simply translate between WiFi packets, screen updates, and button interactions. Very exciting stuff.