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The color change is triggered by ultraviolet radiation and reversed by white light and\/or heating. Inorganic photochromes have been thought to operate with fixed wavelengths only, and because of this, their usage has been considered less convenient than that of their organic counterparts, even if the inorganic ones would show a much higher durability in applications. High\u2010tunability within the whole visible wavelength range was recently demonstrated by some of us for hackmanites, a family of inorganic aluminosilicates. Here, we demonstrate that a davyne\u2010type structure constitutes the first photochromic material exhibiting absorption exclusively in the near\u2010infrared region, without accompanying visible color changes, thereby enabling fully invisible photochromism beyond human perception. Furthermore, we show that the invisible photochromic changes can be detected with a simple camera setup. This is the first material that exhibits invisible near\u2010infrared reversible photochromism, and we discuss its potential for tagging applications.<\/jats:p>","DOI":"10.1002\/anie.6747535","type":"journal-article","created":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T19:31:16Z","timestamp":1784662276000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Tailoring Photochromism Beyond Human Eye Visibility: On\/Off Switchable NIR Absorption in an Aluminosilicate"],"prefix":"10.1002","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-8764-729X","authenticated-orcid":false,"given":"Bettiina","family":"Muurinen","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Turku  Turku Finland"},{"name":"Doctoral Programme in Exact Sciences (EXACTUS) University of Turku Graduate School (UTUGS)  Turku 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