Need a function to get all existing persisted anchor handles

[richardanaya]

Right now there's not a way to recall persisted anchors from previous sessions. As an alternative I turn to using localStorage to store uuids of persisted anchor uuids. However, sometimes accidents happen and I lose that local storage list and I have a persisted list of anchors in my browser that I cannot access. It would be awesome if there was some function getPersistentAnchorHandles that would return me all stored persisted anchor's handles. A side benefit of this would be to allow me to not have to use localStorage solutions for basic storage of anchors and make my AR application simpler.

[cabanier]

We could add a readonly attribute FrozenArray<DOMString>persistentAnchors to the XRFrame.
What do you think?

[richardanaya]

That would work too :) probably more consistent that way.

[cabanier]

Great! It will be in the next browser release