Devices and methods of access control are provided. A device includes a processor, an input interface coupled to the processor, and a memory coupled to the processor. The device may be configured to receive a first input via a first input interface and determine whether the first input includes valid first authentication data, invalid authentication data, or duress authentication data. Based on the determination, if the first input includes valid authentication data, allow access. If the first input includes invalid authentication data, disallow access. If the first input includes duress authentication data, allow access when a second input received via a second input interface includes valid second authentication data. Example inputs include iris scan input, retinal scan input, fingerprint scan input, handprint input, palm print input, facial recognition input, alphanumeric input, touchscreen gesture input, breathalyzer sample input, facial or hand gesture input, or voice input, among others.