5. POI Device Tamper Monitoring and Skimming Prevention
5.1 Instructions for physically inspecting POI devices and preventing skimming,
including instructions and contact details for reporting any suspicious activity
Additional guidance for skimming prevention on POI terminals can be found in the document
entitled Skimming Prevention: Best Practices for Merchants,
available at
www.pcisecuritystandards.org.
● Visual inspection
o Before using the device, the user must conduct a regular inspection to check for
evidence of tampering. The following is a partial list of procedures. Check the
PCI website for the latest best practices.
▪ Exterior should show no evidence of cutting or disassembly.
▪ No evidence of unusual wires or overlays connected inside the ICC slot
nor on or near the PIN entry area.
▪ No changes to the resistance when inserting or removing a card from
the ICC slot.
5.2 Instructions for responding to evidence of POI device tampering
There are three potential screens that you may see if your Clover Mobile or Clover Mini device
detects a tamper:
● In the Setup Wizard, you may be automatically directed to the Get Help screen with the
error “Device tampered, return to manufacturer”
P2PE Implementation Manual for PCI P2PE v2.0 Clover Network, Inc. April 2018
© 2018 Clover Network, Inc. All Rights Reserved. Page 57
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