What would you like to know about typing biometrics?

How can this technology, and the data it collects, be used against individuals for purposes such as discrimination? For example, against slower types could be discriminated against.

Do you see this being a centralized service such as through Google so that a profile can follow a user from company to company as well as offline. How do you see that centralization impacting anonymity on the internet? Along those lines, how long has the NSA been using this on us?

I would like to know how typing biometrics handles injuries that affect my typing pattern such as breaking an arm or a finger.