When interviewing and submitting resumes, I've heard people say that you should have business cards, this is not a bad idea! I prefer to use a more simplistic approach. Everyone has an email account; most email applications include a feature that will allow you to create a personal business card in your contacts, you can include your card with every email and/or resume you send out, if your email does not have this feature, you can create an email signature that has the same information a business card would have on it. Be resourceful!