This is a simple QRcode "Go for Linux". I think it should look good on a t-shirt :) qrcode linux 徽標 Go for Linux
A QR-code, I made using http://qrcode.littleidiot.be/ service. A decoder can be found at http://zxing.org/w/decode.jspx in addition to smart phones apps. 代碼 qr 碼 qr 碼 在 QRcode OpenClipArt.org