Snapchat now lets you @-tag someone in your Story same as Instagram. “@” sign, so you’ll need to remember the username of the person you’re looking to tag. Your friend won’t receive a notification that He/She has been tagged in your story.
Snapchat confirmed to TechCrunch that “We’re testing this,” although the feature hasn’t rolled out to all users .
After you shoot a photo or video with the Snapchat camera, you can add text to it “@[someone’s username]” to mention them.