Materials such as hydrochromic, smart materials, and devices that help monitor or detect humidity are becoming increasingly important in various industries. Hydrochromic materials are used in a variety of applications, from smart packaging that changes colour to indicate when food has gone bad to protective coatings that can indicate when a surface has been damaged. In the art world, hydrochromic indicators can be used to protect exhibitions or artifacts where the presence of moisture or other environmental factors could cause damage. Similarly, humidity detectors are essential for monitoring levels when growing certain plants or in storage facilities for sensitive materials. Industries that could benefit from these materials and devices include food and beverage, healthcare, agriculture, and manufacturing, to name just a few.