[jgrahamc]

iBeacon’s range is 50 meters (typical Bluetooth range), or 2,500 square meters.

That's some weird antenna right there. Assuming it's omnidirectional with a 50m range (radius) then it would cover more like 7,800 square meters.

The range of Estimote’s beacons is 50 meters, but the recommended range is 10 meters. If you go with the recommendation, you need 1 Estimote beacon for every 100 square meters.

More like 314 square meters.

[ISL]

> 2,500 square meters

I'm not sure it's a weird antenna. Looks like the author took 50^2 (square with edge length 50 m) instead of \pi 50^2 (the traditional interpretation of 50 m range).

[jmmcd]

> > you need 1 Estimote beacon for every 100 square meters.

> More like 314 square meters.

But you can't pack circles tightly -- you have to use hexagonal cells.