For the 80 percent of mobile phone customers who are still using feature phones, fear not: LinkedIn Mobile software engineer Sudeep Yegnashankaran has your back. Yegnashankaran described his creation of LinkedIn work-around TextIn during the professional networking site’s monthly Hackday competition in a post on the LinkedIn Blog.

TextIn, which is currently only available to users in the United States, is compatible with the following commands: Invite (inviting someone to connect on LinkedIn), Search (search the professional networking site’s more than 100 million members), Profile (look up a LinkedIn profile), and Update (post an update to LinkedIn connections).

Yegnashankaran wrote:

Around 80 percent of mobile phones sold worldwide are feature phones. This means that not everyone can use our iPhone or Android applications. For LinkedIn’s March Hackday, I decided to build a prototype that would bring LinkedIn features to users of feature phones through simple text messaging.

Imagine that you’re in an important business meeting. Adam, a vice president at LinkedIn, is giving an amazing presentation, but you didn’t catch his last name! During a break, you pull out your phone and send a simple SMS.

Now that you know Adam’s full name and job title, you can view his profile in SMS form, and then invite him to connect on LinkedIn.