A computer keyboard is refurbished by applying to its keys stickers each bearing a character designating the action of a respective key. For application of the stickers to the keys, the stickers are configured and arranged on an application tape in a layout congruent with the layout of the keys by a digital scan of the keyboard. The stickers are temporarily attached to the application tape by a peelable adhesive and then permanently attached to the keys by a pressure-sensitive permanent adhesive.