ScreenK9 field notes

Screen sharing,
with fewer surprises.

Product boundaries, practical workflows, and the engineering behind a local-first audience window.

How to share your screen without showing personal tabs

The practical difference between tidying a browser before a call and making personal browser windows ineligible for the audience view.

All notes

03 articles

What Apple’s public screen-capture APIs can filter, why ScreenK9 is a separate window, and where the product boundary must stay explicit.

A short pre-call routine for product demos, support sessions, interviews, and recordings—even when ScreenK9 is not installed.

FIELD NOTE 00

Good privacy tools explain their boundary before you discover it in a live call.

We document what ScreenK9 can filter, what it cannot control, and why an uncertain browser window stays hidden.