Witeboard
I wrote "Hello World!" on witeboard.com using the active pen on my ThinkPad Yoga. It couldn't keep up with my writing and made a mess of it.Out of curiosity, I tried ziteboard.com (which came up in a search for "online whiteboard"), and it rendered my handwriting perfectly.Here are the results from the two sites:https://imgur.com/a/nCKMEKEI repeated the experiment on my Galaxy Note 8 with its active pen, with similar results on both sites (not included in the images above). Witeboard completely failed, while Ziteboard rendered my handwriting as expected.I also tried conventional touchscreen/TrackPoint/touchpad input on both devices to make sure it wasn't an issue with the active pen, but the results were again the same.As one last test, I connected a mouse to the ThinkPad and tried both sites. Witeboard worked a little better with this pointing device: it mostly kept up but did have a lot of straight lines and sharp angles when I tried to draw scribbly circular patterns. Ziteboard again performed perfectly.I have no affiliation or prior knowledge of either of these sites, I am just reporting my experience in a quick test of each.