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A comment on Show HN: Ding Dong Doorbell – use a QR code as your doorbell. Parent comment

Re:Show HN: Ding Dong Doorbell – use a QR code as your doorbell by pepa65 on Wednesday October 30, 2024 @01:55AM (#41992229)
What would that really look like?? People need to have something in advance to ring your bell?
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