An integration architect has designed a mobile application for Salesforce users to get data while on the road using a custom user interface (UI). The application is secured with OAuth and is currently functioning well. There is a new requirement where the mobile application needs to obtain the GPS coordinates and store them on a custom geolocation field.
The geolocation field is secured with field-level security, so users can view the value without changing it.
What should be done to meet the requirement?