Providing people with your contact information can be simplified by using the IoT Nexus™ vCard capability. There are multiple ways this can assist. The first is simply to publish a vCard to an NFC tag which will then allow anyone with an NFC enabled phone to simply tap their phone onto the NFC tag and they will automatically be prompted to create a new contact in their phone address book with all of your relevant contact information.
For people that have the IoT Nexus™ app installed on their device they can be automatically sent your contact information via a BLE Bluetooth Beacon or when they enter a Geo-Fence location. This could be used t provide your field technicians with the contact details of the site contact as soon as they arrive on site.