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A comment on Wi-Fi Goes Long Range on New WiLo Standard. Parent comment
You have to be close to a router the first time to connect to it.
And after that you both have some long (ie. 65536 bit) random key which is used as a modulation code for your transmissions.
The receiver demodulates with the key to get the data out. Different key can get different data out of the same airwaves at the same time.
Clock's need to be synced perfectly, which is in itself a big technical challenge.
As the article slides to, low power signal reception is also challenging.
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You have to be close to a router the first time to connect to it.
And after that you both have some long (ie. 65536 bit) random key which is used as a modulation code for your transmissions.
The receiver demodulates with the key to get the data out. Different key can get different data out of the same airwaves at the same time.
Clock's need to be synced perfectly, which is in itself a big technical challenge.
As the article slides to, low power signal reception is also challenging.