It is difficult to filter out the lies and exaggerations in some resumes.
One way is to arm your screening staff with adequate questions AND acceptable answers.
1) Some companies provide qualification tests on the basic skills for the job.
2) Provide Scenario-Based interview questions, in which you provide a problem or issue that they need to resolve. Then ask them how they would solve it.
3) Select a solution off their resume, and ask them how they specifically achieved that goal. Ask specifically for references regarding that specific resume action item – and call that person up (versus just calling the people on their reference list).
There are several ways to detect inconsistencies in a resume. These are just a few.