Below is the Magis Minitel. One of the latest and most evolved machines. Unlike earlier Minitels (such as the 1B), it does not seem to be able to interface with computers. However, it does feature a built-in smart-card chip reader.
The chip-card reader enabled a number of applications, from online payments using your regular bank card, to sophisticated professional banking applications. It is worth noting that all French bank cards have included a smart chip since the 1980s.
Below you can see the inside of the machine, including the card reader.
A close up of the card reader's innards