ZKTeco uFace402 Multi-Biometric Time Attendance and Access Control

ZKTeco uFace402 is now presenting the uFace402 Plus Multi-Biometric T&A and A&C Terminal, which supports 3,000 palm templates, 3,000 face templates, 4,000 fingerprint templates, and 10,000 card templates (optional).
It is equipped with ZKTeco’s latest hardware platform and algorithm such as 3-in-1 contactless palm recognition (Palm Shape, Palm Print, and Palm Vein) so that the terminal can be used
Bio-authentication can be performed with the palm vein, the palm print, and the shape of the palm when a hand is detected by the sensor.
The touchless palm authentication method of the terminal with a novel hand tracking technique allows angle tolerances as wide as +/-60° in the roll axis.
With the advanced palm and face algorithm and multi-biometric verification technology, users can enjoy the terminal.

ZKTeco uFace402 Specification

Display:                                    4.3-inch Touch Screen
Face Capacity:                        3,000
Palm Capacity:                       3,000
Fingerprint Capacity:           4,000
Card Capacity:                       10,000 (optional)
Log Capacity:                         100,000
Communication TCP/IP, USB Host, WiFi (optional), 3G (optional)
Standard Functions
Web-server, Work Code, SMS, DST, Record Query, Automatic State Switch, Photo ID, ADMS,   Bell, T9 Input, 9-digit User ID, Multi-Verification Methods, Advanced Access  Control (The ID Card function is optional)

Interfaces of Access Control 3rd-Party Electric Lock, Door Sensor, Exit Button, Alarm
Wiegand Signal Wiegand Out
Optional Functions ID/MF/HID Card, WiFi, 3G, External Bell/Printer, Backup Battery, 485   Reader Algorithms
ZKFace:  V12.0 & ZKFinger V10.0 & ZKPalm V12.0
Power Supply :    DC 12V/3A
Operating Temperat : 0°C – 45°C / 32°F – 113°F
Operating Humidity:      20% – 80%
Dimensions (L*H*D):  193.54 * 165.14 * 111.48 (mm) / 7.620 * 6.502 * 4.389 (in)

Which is the recommended finger to be used for a fingerprint scanner?

You can use any of the ten fingers for verification. The index and thumb are much easier for the scanner to capture rather than other fingers.