These clever QR code coasters give out my home WiFi information for an automatic login, perfect for any party I have an giving people access without them having to ask. All they have to do is scan the code with their phones and they are automatically logged into my WiFi.

Having the code is one thing, reading it is another. For Android phones I use this barcode reader, while iOS uses can natively read QR from their camera app.

Make your own with this easy tutorial :)