We did almost exactly what David's describing at the NSNorth conference this spring. There were about a hundred attendees, and everyone was given an iBeacon that belonged to someone else; using the accompanying conference app, which employed a crude proximity meter (based on RSSI level), we had to figure out who had our beacon in order to get it back. Similarly, it was possible to monitor the presence and levels from every conference beacon in the room.
The limitation that Jim alludes to is that CoreLocation supports monitoring a max of 20 regions. However in iBeacon terms a region corresponds to a beacon UUID, and in the scenario you envision you'll likely only have one. At NSNorth all of the iBeacons were configured with a common UUID, but were differentiated by distinct major / minor ID numbers (which are exposed as NSNumber in the API; I'm not sure what the practical range is but surely quite a number of bits). Having said this, determining the relative proximity based solely on RSSI didn't seem to be particularly straightforward in practice, especially if there a bunch of them nearby. cheers, -ben > On 17 Jul 2014, at 7:33 am, Jim Adams <jim.ad...@sas.com> wrote: > > I think there is a limit of 20 iBeacons that you could range for. Android can > see them all but iPhone limits you. > > -----Original Message----- > From: cocoa-dev-bounces+jim.adams=sas....@lists.apple.com > [mailto:cocoa-dev-bounces+jim.adams=sas....@lists.apple.com] On Behalf Of > David Hoerl > Sent: Wednesday, July 16, 2014 3:34 PM > To: Cocoa > Subject: iBeacons - can 100 different devices be active and seen by one > device? > > I was talking to someone about an idea of giving everyone at a gathering > - say 100 people - iBeacon pendants. An app would have a translation of > everyone there along with their beacon ID, and show the 10 closest people to > any given iOS device.. > > Would iOS be capabile of detecting 100 or so active devices? Or would this > swamp the OS resulting in sporatic results? > > This is obviously somewhat difficult to test without first purchasing > 100 devices... > > David > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/jim.adams%40sas.com > > This email sent to jim.ad...@sas.com > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/ben%40zygoat.ca > > This email sent to b...@zygoat.ca _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
