As of Wednesday, American travelers flying domestically must show a real ID at the airport checkpoint. May 7 deadline for Americans to switch to Federal compatible Identify delays after more than 20 years. The actual ID will also be required to enter certain federal facilities.

Despite new security requirements, business was done as usual at many airports on Wednesday, with some airport sites waiting for only a few minutes at security checkpoints. For example, the website of Phoenix Skyport International Airport shows that the waiting time is between 5 and 16 minutes.

At Chicago's O'Hare Airport, the waiting time is actually lower than usual. Jim Spriggs, TSA's Illinois federal security director, said 90% of O'Hare travelers are ready for the real ID deadline.

TSA employees at Newark Airport said they were pleasantly surprised by the passengers’ preparation. Travelers at New Jersey Airport have Has experienced serious delays In recent days, due to air traffic controller issues and staffing shortages.

LaGuardia Airport in New York Not all travelers have their real ID cardalthough some people remember to carry their passports, this is another acceptable form of identification at checkpoints.

A woman from Laguardia told CBS News in New York. “But I would say I’m really glad I happened to take my passport on this trip because we were going home.”

Another traveler is traveling from New York to Myrtle Beach, South Carolina. "I hope we might choose a different day of travel because it might be more difficult for everyone else, but we'll be fine," he said.

TSA has additional staff at the airport Wednesday to help travelers and explain the differences between acceptable forms of ID cards. Officials are using a secondary procedure to confirm the identity of travelers without a real ID card, passport or other form of compliance proof of identity.

Nonetheless, officials advise passengers to arrive at least three hours before domestic flights, especially if they do not have a real ID card. People without real ID Still able to flyalthough they may face additional security barriers.

The agency said it saw about 81% of actual ID compliance at the airport. according to CBS News Analysis Starting in April, at least 17 states comply with the law.

Those who don't have a real ID can still apply

While domestic air travel as of Wednesday requires an ID card, officials stressed that May 7 is not the last day when Americans can get a real ID card.

"The vast majority of people don't need a real ID card before Wednesday," Secretary of State Alexi Giannoulias told CBS News Chicago.

Even so, the state offices that issue driver’s licenses and state IDs have seen a significant increase in demand for real IDs, with some extending their office hours to meet peak applications.

In the weeks before the new ID requirement will take effect on Wednesday, state driver's license agencies across the country have seen travelers gathered outside to ensure they Real IDthere are star marks in the upper right corner of the card.

CBS News captures a long wait time in the Real ID Super Center in Downtown Chicago and the DMV in Pomona, California, where lines are winding.

Those who don't fly until later this year can wait for an appointment. According to the TSA, air travelers are also allowed to carry an alternative form of ID card, such as a passport, to pass through a security checkpoint.

A list of the identifications that will be accepted on the security checkpoint can be found on the TSA website here.

Five states - Washington, Michigan, Minnesota, New York and Vermont - also published the so-called Enhanced driver's license (EDL) or enhanced ID. This is considered an acceptable alternative to true ID cards.

Looking for a scam

Better Business Bureau Warn people People who have not yet applied for a real ID to follow the scam because fraudsters want to take advantage of the chaos surrounding the application process.

Remember that the only way to apply for a real or enhanced ID is to access the DMV after the appointment. Remember that DMV never reaches out to ask for personal information via text, social media, email or phone.

"Experts say if you come across either, it can be a scam," she said.

- CBS News' Cassandra Guathier, Mabel Kabani, Kris Van Cleave and Maddy Wierus contributed to the report.

Associated Press Contributed to this report.