Their screens use IR (infrared) to sense where your finger is on - screen, although they don't tend to require actual contact with the screen itself. (trustedreviews.com)
A tort of assault does not require actual contact, whereas some jurisdictions define criminal assault elements as those of battery; in others, it is an intended battery without the contact. (law.stackexchange.com)
This means that the cover letter is the first actual contact you have to make with your potential employer. (careersearchamerica.squarespace.com)