Upload the image that you want to create a marker for. Should be a square image or it will be cropped. Keep in mind that you will need a unique marker image for every interaction.
Please keep in mind some criteria for good marker images:1<ul>2<li>High color contrast, ideally black and white3</li>4<li>Asymmetry5</li>6<li>The internal resolution of a marker is 16 x 16 pixels, using larger images can make marker detection worse7</li>8<li>Single characters or short words yield good results9</li>0</ul>