 Patients experience problems with their memories from a variety of causes. There has been much work showing that the use of low tech devices, such as notebooks or diaries, can help patients remain independent. More recently, the use of electronic devices, such as digital voice recorders or pagers, has proved equally beneficial. Many of functions of memory aids could potentially be carried out by a smartphone or tablet using inbuilt functions such as a calendar or maps, as well as through downloadable apps, such as medication reminders. The investigators have surveyed the investigators patients to show that many of them already own smartphones and this number has dramatically increased in the last year. This project aims to investigate the feasibility and efficacy of using smartphone and tablet apps as memory aids in a clinical setting. 