An interactive television program guide with remote access is provided. The standardizing includes recoding of the categories by providing a unified set of categories reflective of similar categories found among the one or more databases, if any. Use of this evaluation method can accurately evaluate specification and analysis of thinning or a pattern which makes it difficult to pinpoint a critical location through the visual inspection. The first and second substrate tables each include a position sensor arranged to measure an optical signal generated on an alignment marker of the first and second substrate, respectively. The particular callee, which provides access to a resource that the host can be protecting, can have been previously configured by the host to always allow the call to be made, to never allow the call to be made, or to allow the call to be made based upon the degree to which the host trusts the managed caller.