The best replacement for keypad is keyboard.

The best alternatives to keypad are rated as following:
★★★★★  keyboard
★★★★  touch screen
★★  swype
★★  keyboard gaming
★★  qwerty
★  keyboard for gaming
★  kindle touch
★  keypad
★  touchscreen
  telephone keypad
  touch
  gaming mouse
  touch screen phones
  wired keypad

Your alternative for keypad is not listed? Suggest!
Speaking about keypad, one probably shouldn't forget about touch screen mobile.

Other search terms related to keypad and their ratings are:
★★★★★ touch screen mobile
★★★★ android
★★★ intercom
★★ touch screen phone
★ numeric
★ trackball
You have in mind a companion for keypad and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of keypad in all years. Click on graph for more.
keypad
keyboard
touch screen