Characteristics | Fingerprints | Hand-geometry | Retina | Iris | Face | Signature | Voice |
---|---|---|---|---|---|---|---|
Ease of use | High | High | Low | Medium | Medium | High | High |
Error incidence | Hand injury, age | Hand injury, age | Glasses | Poor lighting | Lighting, age, glasses, hair | Changing signature | Noise, illness, weather |
Accuracy | High | High | Very high | Very high | High | High | High |
Cost | * | * | * | * | * | * | * |
User acceptance | Medium | Medium | Medium | Medium | Medium | Very high | High |
Required security level | High | Medium | High | Very high | Medium | Medium | Medium |
Long-term stability | High | Medium | High | High | Medium | Medium | Medium |