Wasted Spaces commissioned London-based artist duo Hellicar & Lewis to develop The Hello Wall. The installation went live this Monday, March 8th. It uses Twitter to let the public interact with the huge wall projection on Wembley High Road.

Until Sunday March 14th, you can get interact with this live artwork by tweeting commands to @thehellowall. You can use shapes (triangles, squares, circles), commands (more, less, shake) or just say hello@thehellowall.