Scanner with wake-up mode

A method of operating a system comprising the steps of:

• providing an indicia reader at a point of transaction;
• controlling power to the indicia reader during a power save mode to interrupt power to the indicia reader;
• detecting a customer, item or shopping cart at the point of transaction and providing an indication signal to the controller of the presence of the customer, item or shopping cart at the point of transaction;
• resuming power to the indicia reader upon the controller receiving the indication signal;
• wherein the detecting comprises using a first detector and a second detector, the first detector for detecting a customer, item or shopping cart at the point of transaction and for providing the indication signal to the controller on the presence of a customer, item or shopping cart at the point of transaction being detected using the first detector, the second detector comprising a photo detector for sensing items disposed on the bottom of a shopping cart and for providing the indication signal to the controller on the presence of a shopping cart at the point of transaction being detected using the second detector, wherein the first detector is disposed at the indicia reader and wherein the second detector is disposed at a location spaced apart from the indicia reader.