Patent ID: 8320887

Claim:
An apparatus, comprising: a radio frequency receiver; at least one processor; and at least one memory storing a computer program comprising computer program instructions that, when executed by the at least one processor, cause at least the following to be performed: controlling, in response to the occurrence of a first attempt by a user of another apparatus to contact a user of the apparatus via the radio frequency receiver, at least one light source to produce a first, time-varying, illuminative effect that varies between maxima and minima of illumination intensity over a period of time following the occurrence of the first attempt, wherein the variation in the first illuminative effect is indicative to the user of the apparatus that the first attempt has occurred; and controlling, in response to the occurrence of a second attempt by a user of another apparatus to contact the user of the apparatus via the radio frequency receiver following the occurrence of the first attempt, the at least one light source to produce a second, time-varying, illuminative effect that varies between maxima and minima of illumination intensity over a period of time following the occurrence of the second attempt, wherein the variation in the second illuminative effect is indicative to the user of the apparatus that both the first attempt and the second attempt have occurred.