Hi my Dad has dementia and is cared for by my mum..both aged 83. Recently when they are out Dad has taken to wandering off. The last time he was missing for 3 hours and a police search ensued. We're investigating some sort of tracking device so that he isn't confined from walking but we can find him if he goes missing alone. Any experience of products. Looking forward to getting your advice as this is a minefield. many thanks