Adding an image to a font

Hi, I m trying to add a image into my font, so that I can type with images (simply said). I tried to bitmap it, raster etc., but it did not work. Is there a way to do it? Or does it have to be vectors?

Thanks in advance

Two ways:

  1. sbix font:
  2. SVG:

Read through these tutorials and decide. Neither is widely supported yet.