Electronic memory aids have been used successfully to give reminders to individuals with memory problems. These aids usually present short action reminders that are acknowledged by the user. The recent enhancement of handheld computers with wireless technology has rendered them multi-functional and presents an opportunity to be exploited to meet the demands of the user. This paper describes the architecture of an electronic memory aid system we have developed and are currently evaluating with memory-impaired participants. In addition to providing action prompts, the developed system allows data entry not only on the device itself, but also from other stations. Hence, the memory-impaired user and third parties can remotely enter data into the device, depending on the skills of the user. The system also remotely monitors users' acknowledgements of reminders and allows third parties to initiate further actions where appropriate.