We meet many people and, usually, you exchange contact information. Here are some ways you can digitize your information to share with others and all the cards you received.

Solution #1

Bump is an app available on both iOS and Android. You can exchange your information with someone else by bumping your phones. Bumping an iPhone with an Android phone is not supported. Bump (iOS)
Bump (Android)

Solution #2

You can use a QR (quick response) code. The code can take a person directly to your contact website or social profile. With an app like Paperlinks, you can create you own QR code and scan other QR codes with your mobile device. Another app called Skanz not only allows you to create your own QR code but also your own Skansite that would provide links to your website or social profile. You can even get your QR code printed on many things. Both Paperlinks and Skanz are available on iOS and Android. Paperlinks (iOS)
Paperlinks (Android)
Skanz (iOS)
Skanz (Android)

Solution #3

You can digitize the cards you receive with apps like ScanBizCards and CamCard. It’s simple... you take a picture of the business card and the app uses character recognition to read all the data. It’s not always perfect but it’s a good start. Both apps are available on iOS and Android. Both have free and paid versions. ScanBizCards (iOS)
ScanBizCards (Android)
CamCard (iOS)
CamCard (Android)