# Duplicate obervations **URL:** \ **Category:** General\ **Created:** [November 27, 2020, 2:02pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378 "2020-11-27T14:02:28Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![sushantmore](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/sushantmore/32/12528_2.png) [@sushantmore](https://forum.inaturalist.org/u/sushantmore)\ **Post date:** [November 27, 2020, 2:02pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378/1 "2020-11-27T14:02:28Z")
How about introducing an option which can be useful for identifying duplicates uploads? same photos uploaded by user with the help of this option curators can mark that foto is uploaded multiple time for the same taxon and latest upload can be marked as duplicate and it won’t be counted in his list ---
**Author:** ![sushantmore](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/sushantmore/32/12528_2.png) [@sushantmore](https://forum.inaturalist.org/u/sushantmore)\ **Post date:** [November 27, 2020, 2:05pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378/2 "2020-11-27T14:05:57Z")
for example here [https://www.inaturalist.org/observations/55724066](https://www.inaturalist.org/observations/55724066) uploaded by user on Aug 8, 2020 · 12:33 AM IST and the same Photo again uploaded by user on Aug 13, 2020 · 1:54 PM IST [https://www.inaturalist.org/observations/56301457](https://www.inaturalist.org/observations/56301457) ---
**Author:** ![marina\_gorbunova](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/marina_gorbunova/32/31454_2.png) [@marina\_gorbunova](https://forum.inaturalist.org/u/marina_gorbunova)\ **Post date:** [November 27, 2020, 2:51pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378/3 "2020-11-27T14:51:30Z")
I’d mark them both as date incorrect until one will be deleted, they’re uploaded for completely different dates and years. UPD. Exit is present on only one version of the pic, so I marked the second date/observation as incorrect. ---
**Author:** ![ahospers](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.inaturalist.org/ahospers/32/1483_2.png) [@ahospers](https://forum.inaturalist.org/u/ahospers)\ **Post date:** [November 27, 2020, 3:22pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378/4 "2020-11-27T15:22:21Z")
It is mentioned in the past. I only know that the one Wikimedia is using to prevent duplicates is working nice. [https://www.mediawiki.org/wiki/Topic:Tk68mvtbbqwxnh98](https://www.mediawiki.org/wiki/Topic:Tk68mvtbbqwxnh98) On MediaWiki they do have duplicate checks too SHA1 checksum [https://www.mediawiki.org/wiki/API:Imageinfo](https://www.mediawiki.org/wiki/API:Imageinfo) [https://www.mediawiki.org/wiki/API:Duplicatefiles](https://www.mediawiki.org/wiki/API:Duplicatefiles) ---
**Author:** ![jwidness](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jwidness](https://forum.inaturalist.org/u/jwidness)\ **Post date:** [November 27, 2020, 4:30pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378/7 "2020-11-27T16:30:45Z")
If you’d like to request a feature, please submit to the feature request category. As it turns out, there is already [an existing request to check for duplicate images](https://forum.inaturalist.org/t/duplicate-prevention-notify-observers-if-their-image-checksums-match-others-on-the-site/258), so I’m going to close this thread to focus discussion there. ---
**Author:** ![jwidness](https://avatars.discourse-cdn.com/v4/letter/j/9d8465/32.png) [@jwidness](https://forum.inaturalist.org/u/jwidness)\ **Post date:** [November 27, 2020, 4:31pm UTC](https://forum.inaturalist.org/t/duplicate-obervations/18378/8 "2020-11-27T16:31:22Z")