Chapter 3
Recycled Chip Detection using RO-based Odometer
Recycled chips are those reclaimed from discarded boards and systems and sold as new. If integrated into mission-critical infrastructure, such devices would induce reliability and performance issues due to their previous excessive usage. Ring oscillator (RO) odometer is a golden reference-based mechanism to help end-users detect recycled devices with the assistance of original component manufacturers (OCMs). In this chapter, we present counterfeit threats comprehensively at first. Next, by focusing on the major counterfeit type, i.e., recycled devices, we present a hands-on experiment for detecting recycled devices using a lightweight RO-based odometer sensor.