Related Clues:

• Use a keyboard, perhaps
• Use an old Royal
• Enter characters
• Biology class
• Use 7-Down
• Pound the keyboard
• O positive, for one
• Class or kind
• Kinds or sorts
• Genus subdivision
• Blood bank category
• Word with ''blood'' or ''touch''
• Punch (in)
• Disclosure on eHarmony
• Use the touch system