Would you strap a device on your wrist that listens to your every word every day so it can send you relevant reminders and summarize your conversations? WSJ senior personal tech columnist Joanna Stern did just that and shares her insights about the usefulness of such devices and the legal questions around their use. Plus: We get an update on the courtroom showdown between Meta and the Federal Trade Commission over whether the social-media company is operating a monopoly. WSJ reporter Dave Michaels brings us up to speed.

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