In the time since most of your clients have flown, there have been some significant changes. Many relate to travel documents, disinfectants, and masks. Whereas all that was previously required was a passport and airline ticket, now they may have to supply vaccination data, testing information, health inventories, and reservations for many of the restaurants and entertainment experiences they're planning to enjoy.

All travelers will require masks, possibly a medical-grade one to use on flights where some flyers are not vaccinated, and a light-duty one to wear outside in crowds. Also, many fliers will want to carry wipes for use on restrooms and seat surfaces.

By summer, many nations and likely some states will require virtual health passports, meaning that smartphones will be essential to display them.…