What is the fine-grained topic of the following text: Furthermore, WTTC’s latest research asked international travellers from five key European markets (France, Germany, Italy, Spain and the UK), to what extent they would be willing or unwilling, in advance of travelling outside their country, to provide their photo electronically, to organisations that may require seeing their passport or photo ID. Only return the topic.
Willingness of European travelers to provide their photo electronically for passport or ID verification