If an elder is lost, the caregiver will be worried and anxious as he/she has to look for the elder and call the police for help. Caregivers can make a tracing leaflet in advance for elders who are at risk of getting lost, which includes a recent full-body and half-body photo of the elder, his/her physical characteristics, medical history, what he/she was wearing at the time of loss, his/her daily routine, and the information of his/her emergency contact person, etc., so that the leaflet can be handed over to the police for follow up in the event of a loss, thus speeding up the chances of recovering the elder.