Originally Posted by cooler:
“But if people are using it outside they won't have wi-fi unless they are using it in their own garden or near a public wi-fi spot. But who's going to do a fitness class near a hotel, airport, train station, cafe, etc.. which have a wi-fi spot.
How would it be done via bluetooth if it requires the internet to access the fitness app? Bluetooth is for transferring data when devices are within close distance of each other.”
What does the fitness app do? And why does it have to be on-line? I can't see a need unless they want to synchronise different fitness groups around the country.
Wi-fi as I understand it could be used to communicate between local computers, even if there is no internet connection (I've used ethernet for that purpose).
While Bluetooth can be used up to 10m (and Wikipedia suggests it can be up to 100m). I'm also concerned with what's inside each headset: presumably there would be some sort of smartphone, which would need to be up and running, and with a 3G connection, which I understand can also cost money.
It just seems extraordinarily over the top for something that even in the 70s could be done with a simple bit of electronics plus a portable cassette player. We're talking about mixing a source of music with the input from a microphone.