A computing device can enable and/or provide communication functionality based at least in part upon a type of pressure applied to the device by a user. In some embodiments, a device can attempt to determine a mood or disposition of the user based upon the way in which the user is gripping and/or squeezing the device, and can provide the user or another person with information about that user's current mood. Similarly, a user might be able to use certain motions or pressure applications at one or more locations on a device to cause certain communications to be sent, such as to send a specific message or convey a certain mood of the user. At least a portion of the computing device can have pressure-sensitive material or capability, in order to allow for input on the sides, back, or other appropriate locations on the device.