There should always be an alternative to fingerprint verification due to the problems people have with fingerprint readers if they work in certain industries or have certain medical impairments.
There are many people who suffer from skin diseases. Some of these diseases have a strong influence on the process of fingerprint recognition. People with fingerprint diseases are unable to use fingerprint scanners, which is discriminating for them, since they are not allowed to use their fingerprints for the authentication purposes.
The various diseases include Hand eczema / hand dermatitis, Fingertip eczema / fingertip dermatitis, Pompholyx / dishidrosis, Tinea of the palm / tinea manus, Pyoderma, Pitted keratolysis, Keratolysis exfoliativa, Lichen planus, Acanthosis nigricans, Pyogenic granuloma, Systemic sclerosis, Raynaud’s phenomenon, Medication induced adverse skin reactions, Leprosy, Herpes simplex virus, Scabies, Erythema multiforme, Dermatitis artefacta, etc, so it a bigger problem than may first appear.