I can make your projects more cool by using new techonolgies. Augmented Reality is a way of enganging you clients and future consumers of your product by giving them a a way to try the product before the purchase. You can use augmented reality to preview a certain service or product and make your consumers interact with that same product, or, for example, to architecture, where you can show to your investors the final construction without having to make a mockup of your project, just place the marker and use a in-phone app to see the project in 3D, and interact with the project. This kind of application is compatible with android, iOS, Windows and UNIX-based sistems.
What the Seller needs to start the work
It totally depends on the project. Say you wanna do a preview of your product: I am going to need the most detailed briefing, the 3d model of your product, and then your email so that i can discuss the Augmented Reality project with you