Abstract: A licensing system provides for various versions of an application within a software product. A license type is identified from a product key that is associated with the software product. The license type may correspond to a hybrid license. When the license type is a hybrid license, an application state is determined for any applications included in the software product. A use experience for the applications is provided according to the application state when the application state is determined. For applications that are provided as upgradeable versions, an upgrade may be obtained by simply obtaining a new product key that is associated with the upgraded versions of the applications.

Abstract: Legibility of text in an image of a page is determined by comparing a measure of the text in the page image with a measure of the page image itself. In one aspect, a measure of the text in the page image may be the height of a line of text, while the measure derived from the page image may be the height of the page image. A text-to-page height ratio is determined and compared to one or more thresholds for determining legibility. In another aspect of the invention, a measure of the text in a page image is obtained by measuring the word density in the page image, while the measure derived from the page image comprises compressing the page image and determining the size of the compressed image file. Legibility is then determined by comparing the measure of word density with the compressed image file size.

Abstract: Legibility of text in an image of a page is determined by comparing a measure of the text in the page image with a measure of the page image itself. In one aspect, a measure of the text in the page image may be the height of a line of text, while the measure derived from the page image may be the height of the page image. A text-to-page height ratio is determined and compared to one or more thresholds for determining legibility. In another aspect of the invention, a measure of the text in a page image is obtained by measuring the word density in the page image, while the measure derived from the page image comprises compressing the page image and determining the size of the compressed image file. Legibility is then determined by comparing the measure of word density with the compressed image file size.

Abstract: The present invention leverages selections of data locations and comparative analysis of data values stored in these locations to provide a secure means of maintaining data integrity with minimal computational burdens. This provides, in one instance of the present invention, a tamper-resistant process to ensure that software application usage data is protected from malicious attacks. By storing and recalling data in an untraceable fashion, the present invention substantially increases the effort required to spoof the stored data. Additionally, comparative analysis is utilized with the randomized approach to facilitate in maintaining consistency of the stored data both in retrieval of information and when storing new data values. This allows checking of the data prior to overwriting sensitive data, thwarting malicious attacks that spoof new data as a means to alter the stored data.