what is an alternative device to speakers?

what is an alternative device to speakers?

Headphones
do you really mull over there's an answer for that
Screwdriver?

Lightbulb?

Kleenex?



What do you want the device to do? Once you know that then you can look at alternative methods of accomplish that goal.
At Manchester University a student have invented a system that is moderately large (about 10cm long) rectangular strip that fits on your cranium and resonates a signal to a vibrating constituent of your inner ear.



No wires and works via blue tooth.



As it works in your inner ear nobody can hear what your listen to.



I think this is going to be a massive hit especially when it more developed and smaller.



The applications are abundant especially for the police, army or security services etc.
OK, I'll pilfer this as a serious question. You can buy little vibrate thingys that you can stick on cupboard doors or other hollow objects (---blank---), which in turn, amplify the vibrations. and so, portable speakers you can transport on holiday with you.
Signing or Head phones...
Headset a guess...im using headset since im using a laptop..
Headphones clearly.
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