Security lines at Minneapolis-St. Paul International Airport this spring and summer are not the only place passengers have been kept waiting.

Passengers wishing to enroll in the Transportation Security Administration's PreCheck program have faced long waits, too. Some travelers have had to wait more than three weeks to get an appointment at the metro's enrollment centers in Brooklyn Center, Bloomington and inside the MSP Airport.

To alleviate that problem, TSA will operate a temporary screening center Aug. 23-27 at the Hilton Minneapolis Hotel near the Mall of America. IdentoGo, the company operated by MorphTrust USA and enlisted by the TSA to conduct the enrollment process, will enroll travelers from 10 a.m. to 7 pm. Aug. 23-24 and from 8 a.m. to 5 p.m. Aug. 25-27. The temporary center will be able to serve up to 1,000 applicants, said Elizabeth Marshall, MorphoTrust USA's director of marketing.

Appointments can be made at http://www.IdentoGO.com/tsaprechecktour.

PreCheck allows passengers who pass a background check and pay $85 for a five-year period to bypass standard screening through special lanes that allow them to leave their shoes, belts and light jackets on. Laptops can remain in carry-on luggage, making passing through security faster.

In addition to Minneapolis, MorphoTrust USA has run temporary enrollment centers in New York, Dallas, Miami, Chicago, Orlando, Los Angeles, Denver, Seattle, Las Vegas, Atlanta, Boston, and Houston.

'We did this in response to heavy media coverage about long lines and unfortunate traveler experiences at busy airports," Marshall said. "People were missing flights, and stuck in security lines."

Travelers should bring cash, check or credit card along with a passport or a birth certificate and current driver's license to their appointments.