TSA checks your ID, but what about their own?

This is why no amount of "smart" security ideas will ever make the TSA more effective or less invasive. It's a (rogue) government bureaucracy:

Two examples:

• In one instance, an applicant had three active badges at three different airports and three different countries of birth—the United States, the United Kingdom and Ukraine—listed on his various applications. Although he is a U.S. citizen, all of his applications contained copies of his passport, which states the U.K. as his place of birth.
• In 2007, customs officials conducted a search at one major airport and arrested 23 workers with unauthorized airport access. The search also turned up more than 100 temporary employees who possessed fraudulently obtained airport security badges.