The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In ubiquitous computing environment, identification of objects and places in the real world is important, and 2D printing code is useful to store identifiers of them. However, since it is easy to modify the content stored in the 2D code, we must verify whether the identifier written in the 2D code is indeed issued by the authorized organization. In this paper, we propose a verification method for...