Visitors passing through should be presented with the offer to quickly opt-in for updates from the duty-free shops via their cellphone. By collecting user information at the point of purchase, and by advertising an SMS keyword campaign, duty-free shops can collect valuable customer information to send further communications.
Create an employee-friendly form. With this form, employees can collect customer information at point of service. Customers can choose to receive messages either via SMS or email. Make sure that customers are aware they will be receiving promotional material.
Register an SMS keyword for the duty-free shop. Once you have it registered, advertise it as an option for customers to text in to opt in for your communications.
Now you can collect signups at point of sale through your form and through SMS opt-in. Both of these options provide customers with simplicity to receive your messages.
With the opt-in list you now have, advertise upcoming deals and promotions as they occur.