The advent of smartphones and mobile internet allowed for the creation of projects that can be used in the physical spaces they inhabit. There are several aspects that have been created using this idea. Some, like PhillyHistory.org, allows users to see the past around them on their smartphone as they walk around the city. Some institutions have created companion applications for smartphones that visitors can use as they walk through established exhibits in a museum, as this exhibit has shown. This type of history has the potential to be groundbreaking, as seen with the Histories of the National Mall, where the information is sent in a way that does not require downloading an app beforehand. By running the project over Internet protocols, this type of project is not limited by changing smartphone capabilities.