History Pin is a website that allows you to upload old photos and pin them to real world locations. It’s a great site with wonderful images from the past and it’s now even more usable thanks to the launch of it’s iphone and android apps. So by holding your phone up to the street, the app uses your camera view to display nearby images. By selecting the image, it can be overlaid onto the modern view to create an historical comparison, which you can toggle or fade between. Having tested it in Portsmouth we can report that it works really well!