ABSTRACT
Digital microfluidics refers to the manipulation of small, discrete quantities of fluids. Digital microfluidic biochips (DMFBs) have thus emerged as one of the most promising techniques for realizing the lab-on-a-chip. Digital microfluidics is a general term; any technology with the ability to manipulate droplets discretely can be considered to be a type of digital microfluidics. Digital microfluidic biochip security consists of a complex relationship among threats, vulnerabilities, assets, motivations, actors, attacks, and countermeasures. A DMFB is merely a platform for droplet manipulation. Efficient error recovery has been a major challenge for DMFB designers due to a plethora of naturally occurring hardware faults. Sensitive information in a DMFB can include patient data and secret keys used to lock the hardware. The controller for a DMFB can be implemented as a finite-state machine (FSM), where the actuation sequences are determined by the current FSM state.
