Taking screenshots without permission is a tricky issue, as it can be difficult to determine when it is and isn’t legal. Generally speaking, it is unlikely that taking a screenshot of a photograph without the subject’s permission would be considered illegal unless it infringes on their privacy or could cause them harm. When the photograph is considered copyrighted material, taking a screenshot of it would be regarded as unlawful.
In most cases, it is best to err on the side of caution and ask for permission before taking a screenshot. Depending on the context, it may be necessary to get written permission from the subject of the photograph. This is especially true if the photograph contains sensitive information or could be used to harm the subject in any way.
In addition, it is important to be aware of any laws or regulations that may be in place regarding the taking of screenshots. For example, in some countries it is illegal to take screenshots of copyrighted material without the permission of the copyright holder. In the United States, the Digital Millennium Copyright Act (DMCA) protects copyrighted material from being reproduced without permission.
Finally, it is important to remember that taking a screenshot without permission can have serious consequences. Depending on the context, it could be considered a form of copyright infringement or even a criminal act. As such, it is important to be aware of the potential legal implications before taking a screenshot without permission.