1.0. Introduction
The ACS AET60 BioCARDKey is a device which combines a fingerprint scanner and a smart card
reader/writer. The fingerprint scanner (TouchChip) makes use of the Active Capacitive-Sensing
Technology from STMicroelectronics. The reader/writer part enables the communication between a
computer (for example, a PC) and a smart card.
Since fingerprints cannot be lost, duplicated, stolen or forgotten, the TouchChip product is regarded
as something that provides a more reliable and convenient solution than traditional security devices.
With the BioCARDKey, security is improved further by storing the fingerprint templates inside a SIM
card instead of the PC. This not only provides a more secure environment but it also enhances
portability and eliminates privacy concerns. It also gives the user the flexibility of being able to carry
their fingerprint template with them, assured with the knowledge that no one else can use their smart
card should it become lost or stolen.
In the present state of the smart card industry, different types of smart cards use different commands
and different communication protocols. In most cases, this situation prevents the direct
communication between a smart card and a computer. The BioCARDKey Reader/Writer establishes a
uniform interface between the computer and the smart card for a wide variety of cards. By taking care
of the card-specific particulars, it releases the computer software programmer from getting involved
with the technical details of the smart card operation, which in many cases are not relevant for the
implementation of a smart card system.
The BioCARDKey is connected to the computer through a USB interface. The device accepts a
command from the computer, carries out the specified function on the TouchChip and the smart card
and returns the requested data or status information back to the computer.
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AET60 Reference Manual
Version 1.7
Page 3 of 24
www.acs.com.hk
