We use a leash to walk our pet dogs, The leash keeps dog from running away or getting into trouble.
VOA: special.2009.03.29
On 20th July - the very next day - the company that had been running private walk-in centres announced they were closing all their centres outside London.
Or you can be lazy about it, you can turn on passive tracking and just walk around with the app running and it will track your travels and plot your photos, comments and saved locations to the map, giving you an animated diary of your day.