I have speakers and a 3.5mm audio cable. These things together cost me $10. If you throw my phone into the mix, I have all the hardware of Prizm. This should have been an app (not that I'd use it either way).
Use case of "like + do not like" with or without your phone
1. plug your phone
2. open the app
3. type "like"
4. receive a sms (which sound on the speakers)
5. open the app again
6. tape "do not like"
