Crowd size estimation based on wireless signal absorption

A receiving device for estimating crowd size based on detected wireless signal absorption, the receiving device comprising:

• an antenna for receiving a plurality of wireless signals from a plurality of transmitting devices;
• power sensing circuitry for detecting a plurality of power levels for the plurality of wireless signals, wherein each power level of the plurality of power levels corresponds to one of the plurality of wireless signals;
• and
• one or more processors configured to perform operations including:
• analyzing the plurality of power levels to determine three characteristic power levels of the plurality of power levels;
• calculating an absorption amount based on the three characteristic power levels;
• and
• estimating a number of people based at least in part on the absorption amount.

A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to perform operations including:

• receiving a plurality of wireless signals from a plurality of transmitting devices;
• detecting a plurality of power levels for the plurality of wireless signals, wherein each power level of the plurality of power levels corresponds to one of the plurality of wireless signals;
• analyzing the plurality of power levels to determine three characteristic power levels of the plurality of power levels;
• calculating an absorption amount based on the three characteristic power levels;
• and
• estimating a number of people based at least in part on the absorption amount.