End user protection against ATM keypad overlay

A system for determining a presence of a fraud device overlaid on a data entry device, the system comprising:

• a memory;
• a transaction processing terminal having a data entry device that is communicatively coupled to a processor and the memory, wherein the processor is configured to:
• emit, from beneath a surface of the data entry device, security light from a set of one or more emitters, wherein the security light has a security light luminous power;
• and
• wherein the surface comprises one or more apertures;
• collecting a reflection of the security light off the material by a first set of one or more sensors, wherein the reflection has a reflection luminous power;
• determining a luminous power range based on the security light luminous power;
• and
• based at least in part on the reflection luminous power being outside the luminous power range, engaging one or more security measures at the data entry device.

A computer program product for determining a presence of a fraud device overlaid on a data entry device comprising a non-transitory computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform a method comprising:

• emitting, from beneath a surface of the data entry device, security light from a set of one or more emitters, wherein the security light has a security light luminous power, and
• wherein the surface comprises one or more apertures;
• collecting a reflection of the security light off the material by a first set of one or more sensors, wherein the reflection has a reflection luminous power;
• determining a luminous power range based on the security light luminous power;
• and
• based at least in part on the reflection luminous power being outside the luminous power range, engaging one or more security measures at the data entry device.