Exposing sensors in service workers

[tobie]

Sensors must be exposed in services workers.

Actions:

• [ ] List use cases for sensor in a ServiceWorker.
• [ ] Figure out the permissioning story.
• [ ] Figure out a generic way to have sensors operate in the background.
• [ ] Assess whether this should be part of the Generic Sensor API or a completely different spec.

[mkruisselbrink]

This is also related to #73

[marcoscaceres]

I don't know if you can expose the sensors in SW unless it's only for 1 shot (or very periodic). You can't spin up a SW and keep the SW alive reading data (AFAIU, that defeats the purpose of a SW unless you are trickling data slowly based on thresholds - like "only when the temperature goes above 37c, notify the SW").

[tobie]

Absolutely. You're looking more at geofencing than geolocation.