I bought this pen to use for zoom screen demonstrations with my physics students. Unfortunately I can't write a complete and clear formula - the lines are imprecise, they break, the touchscreen of my (brand new) laptop almost seems to have "blind spots" where the pen doesn't register at all. Then I quickly made a passive stylus out of a cotton swab, a piece of aluminum foil and a drop of water. It worked great and I was able to write as fluently and clearly as I wanted. It might be worth investing in a passive stylus instead. They are cheaper than active styluses and more ergonomic than Aq nibs.
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