Update: I just found this excellent article which talks about how the APSIS4all (Accessible Personalized Services In Public Digital Terminals for all) consortium is working on making digital terminals such as ATMs and TVMs more accessible and usable through personalization. To quote the article
Direct and Indirect Interaction Approaches
APSIS4all implements two different approaches to an inclusive user experience via either “direct” or “indirect” interaction. The direct approach involves providing users with a contact or contactless smartcard that stores their needs and preferences (see Figure 1).
The individual user accesses a web interface (see Figure 2) that allows them to identify their particular needs and preferences. The web interface guides them through a process to define and customize how a terminal presents their information. This information is stored using international standards, which facilitates the sharing with different service providers and systems. One relevant standard is EN 1332.
Once the users get to a terminal and present their card, the terminal changes the settings based on the stored information to suit their preferences, providing the most appropriate interface available. That way, public terminals automatically adapt to the individual user. Users can activate a range of personalized features such as changing the size of text, setting foreground and background colors, enabling audio output, adding sign language avatars (see Figure 3), or adding help content to support their interaction with the terminal.


