Printed Text Keypads?

Anyone know anything about conductive inks? I am looking to make a flat keypad of printed text with no buttons. Anyone know a company that makes flat text calculators?

I dont have any info on conductive inks but you might want to look at membrane switches. You can get them with out the metal dome, eliminating the tactile feadback

Check out Dupont.

http://www2.dupont.com/MCM/en_US/

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