For security-relevant applications - such as signature with Sign Live! C.C.C or internet banking, card readers are divided into security classes.
To generate a qualified electronic signature, you need card readers of security class III. One of the distinguishing features of these devices is that they have a display in addition to the keyboard. There Sign Live! C.C.C has been certified by the BSI, we recommend card readers that also have this certification.
A list of manufacturers and the names of the card readers tested can be found in Sign Live! CC data sheet.