Ultrasonic Payments

Re:Ultrasonic Payments by sdrothrock on Wednesday June 08, 2022 @01:04AM (#31663439)

I also have a cochlear implant; it doesn't allow me to hear ultrasonic frequencies -- in fact, my hearing range is still a subset of "normal."

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Re:Ultrasonic Payments by mercurywells on Wednesday June 08, 2022 @01:15AM (#31663494)

I have one as well, and I've noticed that area proximity detectors (in hallways used to detect presence/motion) do get picked up and come through as loud pops.

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Re:Ultrasonic Payments by raindear on Wednesday June 08, 2022 @04:38AM (#31664757)

There are also electricity poles with a strong EM field that cause a humming sound.

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Re:Ultrasonic Payments by shepherdjerred on Wednesday June 08, 2022 @02:54AM (#31664191)

How loud? These are audible to me without an implant (unless some are audible and some are inaudible)

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Re:Ultrasonic Payments by jhugo on Wednesday June 08, 2022 @03:50AM (#31664495)

You might be hearing a relay, which is itself switched by the proximity sensor.

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