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GNU social JPは日本のGNU socialサーバーです。
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Photo in a metro station with an unknown type of bar code

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https://media.mathstodon.xyz/media_attachments/files/114/523/708/890/105/482/original/00f24678efce4597.jpg

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    Colin the Mathmo (colinthemathmo@mathstodon.xyz)'s status on Saturday, 17-May-2025 23:48:33 JST Colin the Mathmo Colin the Mathmo

    Does anyone know what kind of bar code this is? What should I do a search for?

    In conversation about 2 days ago from mathstodon.xyz permalink
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GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.

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