US Patent 9582797 Dynamic adjustment of item fulfillment times

Techniques and arrangements for dynamically adjusting item fulfillment times based, in part, on how many mobile electronic devices are currently located at the merchant. If the number is greater than a baseline number of devices by more than a threshold, then an expected wait time may be adjusted upwards. If the number is less than a baseline number of devices by more than a threshold, then the expected wait time may be adjusted downwards.