Abstract: A method, computer program product, and system for providing a security check of items being purchased by a consumer. A digital image of items for purchase arranged on a scale is captured. An estimated total weight and a cumulative center of mass of the items are estimated. An actual total weight and cumulative center of mass of the items are measured using the scale. If the estimated total weight of the items differs from the actual total weight by more than a first threshold amount and/or if the estimated cumulative center of mass of the items differs from the measured cumulative center of mass by more than a second threshold amount, an alert can be output. The alert can include an instruction for the customer or a store employee to rearrange the items on the scale to attempt to resolve the discrepancy.

Abstract: A method, computer program product, and system for providing a security check of items being purchased by a consumer. A digital image of items for purchase arranged on a scale is captured. An estimated total weight and a cumulative center of mass of the items are estimated. An actual total weight and cumulative center of mass of the items are measured using the scale. If the estimated total weight of the items differs from the actual total weight by more than a first threshold amount and/or if the estimated cumulative center of mass of the items differs from the measured cumulative center of mass by more than a second threshold amount, an alert can be output. The alert can include an instruction for the customer or a store employee to rearrange the items on the scale to attempt to resolve the discrepancy.

Abstract: Systems, methods, and heaters for treating a subsurface formation are described herein. Systems and methods for making heaters are described herein. At least one heater includes a ferromagnetic conductor and an electrical conductor. The electrical conductor is electrically coupled to the ferromagnetic conductor. The heater provides a first amount of heat at a lower temperature. The heater may provide a second reduced amount of heat when the heater reaches a selected temperature, or enters a selected temperature range, at which the ferromagnetic conductor undergoes a phase transformation.

Abstract: Heaters for treating a subsurface formation are described herein. Such heaters can be obtained by using the systems and methods described herein. The heater includes a heater section including iron, cobalt, and carbon. The heater section has a Curie temperature less than a phase transformation temperature. The Curie temperature is at least 740° C. The heater section provides, when time varying current is applied to the heater section, an electrical resistance.