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I should have been clearer: One way pagers seem to still exist. They do not transmit.
by xfitm3 8y ago
I should have been clearer: One way pagers seem to still exist. They do not transmit.
- pdkl95 8y agoDan Geer (CISO at In-Q-Tel, has been warning about the dangers of surveillance for years) has spoken about how he uses a pager instead of a cell phone. https://www.washingtonpost.com/news/the-switch/wp/2014/08/11/why-one-of-cybersecuritys-thought-leaders-uses-a-pager-instead-of-a-smart-phone/ https://www.washingtonpost.com/news/the-switch/wp/2014/08/11...
- ghostly_s 8y agoIsn't this just a billing distinction though? A 'receive only' pager still needs to announce itself to the cell tower to have messages routed...pretty sure they're not just multicast across the entire global cell network?
- pdkl95 8y ago> cell network Pagers do not use the cellular network. (some cellular networks do provide paging-style services, but that is a later development that is unrelated to traditional pagers) > A 'receive only' pager still needs to announce itself A traditional pager doesn't have a radio transmitter. > they're not just multicast The message is broadcast region-wide using very low-bandwidth protocols[1]. A pager will generally only work inside the region it is registered with. To compensate for the lack of ACKs, the message is usually repeated several times; it will missed if the pager is off for all of the transmissions. [1] https://en.wikipedia.org/wiki/FLEX_%28protocol%29 https://en.wikipedia.org/wiki/FLEX_%28protocol%29