Cataloging maintenance has become so much more efficient after we started using the iPad and wireless scanner combination. We now only need to make one trip to the stacks.
In addition, we eliminated the need to print out records for reference and to bring pen and scratch paper for notes.
Locating the problem records in the local ILS and cross-referencing to the correct records in OCLC Connexion while in the stacks has also become much easier with a mobile device like the iPad.
Most errors cen be fixed right after they are spotted.
For the ones that cannot be fixed on-site, I always have the option to either take screenshots of the problem records or take photos of the physical items in question so that l can do more research after rerunning to my office.