The threat of laptop loss—be it theft, damage, or misplacement as checked luggage—is likely to make some companies consider whether some meetings can be conducted via Skype or other virtual methods, said Andrew Coggins, a management professor at Pace University’s Lubin School of Business. “People don’t want to let their laptops go,” he said.

That may be bad news for airlines who count heavily on business travel for profitability.

This prospect, and the possibility of summer airport havoc, mobilized airlines last week to try to minimize the impact of any broader ban. It also prompted European Union officials to invite their U.S. counterparts to Brussels this week for a meeting about the underlying security threat of laptop-borne explosives being used by the Trump administration and others to justify it. EU officials told U.S. Homeland Security Secretary John Kelly on Friday that any terror threats affect both continents and require a coordinated response.

David Lapan, a spokesman for DHS, said in an email that “as no decision has been made, it is premature to discuss what additional restrictions might, or might not, be.”

The U.K. has imposed a similar ban, but on fewer airports. Canadian officials don’t ban cabin electronics on flights to Canada. The nation’s aviation regulator, Transport Canada, isn’t considering any new aviation security measures, agency spokeswoman Marie-Anyk Côté said.

The current U.S. approach on the proposal—flights to America pose a threat but not the reverse—implies that the Trump administration considers U.S. airport security superior to that of European or Middle Eastern nations. While security coordination between U.S. and European officials could lead to a policy affecting all trans-Atlantic flights, another outcome might be a unilateral U.S. electronics ban followed by the same EU decision affecting flights from America.

Either way, U.S. carriers and airports are grappling with how to comply with an expanded ban. The questions are myriad:

• Would airlines require passengers to pack the devices in their checked luggage for storage in the cargo hold?

• Would it be easier to collect such devices at airport gates and then load them into a single container in the cargo?

• How would individual laptop and other devices be tracked and returned to their owners?