Summary Box: Phones that let you feel the world

BEYOND THE RING: A few companies want to replace the crude vibration motors in today’s phones and tablets with something that provides a much wider range of sensations, allowing you to feel the reverberation of a shotgun blast.

ONE EXAMPLE: Artificial Muscle Inc. demonstrated how it can make mobile devices shake and rattle with great realism, employing a technology that uses plastics that function like muscles.

AVAILABILITY: The first product to use the technology is a sleeve for the iPod Touch that’s intended to make games more lifelike. The next step is to get that built into phones.