In recent years, we have seen a lot of new technologies emerging in the user interface domain. But when it comes to its use in critical applications like medical instruments, Defence devices, and functioning in harsh environments, we need an interface that can withstand UV lights and water ingress and yet provide safe use.

Even after 2-3 decades, we still find wide use of membrane switches in Medical instruments, Defence equipment, and Petrol pumps. Membrane switch keyboards are the user interface whose keys are not separate like a mechanical switch, these are pressure pads that have only outlines and symbols printed on a flat flexible surface. The lifespan durability and user interface makes it one of the good choice for any kind of man-machine interface application.

Couple of advantages of using membrane switches in instruments are:

• Easy to disinfect
• Water resistance 
• Accommodate in less space 
• Durable  
• Has a tactile feedback 
• Can be customized 
• Has a backlit 
• Can be protected from ESD, EMI and RFI