DAT 628 Guia do Utilizador descarregar pdf (Página 9)

After washing your hands or in rigid temperatures, your fingers tend to be

dry. In this case, the user should moisturize their finger(s) simply by

breathing on the fleshy pad of their fingertip before placing it on the

sensor. The moisture from their breath is transferred to the finger(s) which

should help improve their recognition.

If the fingerprint is too wet, the ridges and valleys are rendered

indistinguishable. The lack of recognizable minutiae causes wet

fingerprints to be rejected by the A10/X628. A quick resolution to this

problem is simply swiping the finger on a clean dry towel or cloth.

D. How Much Pressure Required for Good

Fingerprint(s)

Too much pressure applied on the sensor can cause ridges to be too close

together, which creates an indistinguishable image. In addition, too much

pressure generates blurred images which the sensor cannot identify.

If little pressure is applied, the sensor will not be able to read the

fingerprint.

It is crucial for your finger to cover the majority of the sensor and maintain

contact with it for 2 full seconds until you hear your A10/X628 beep.

When you hear this, the A10/X628 is sensing your finger and will prompt

you to continue the enrollment process.

Practicing applying pressure to the sensor will increase the chances of

your fingerprint being readable. Once you have a better idea of how much

pressure to use, enrolling users shouldn’t be a concern.

Below is an illustration displaying how to properly place your finger on

the sensor.

Below are examples of how not to place your finger on the sensor.

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DAT 628 Guia do Utilizador Página 9