Trakcoin Exchange (TKEX) requires two factor authentication (2FA) to secure your account. Listed below are two supported options depending on your smartphone OS:
Android app: https://play.google.com/store/apps/details?id=com.twofasapp&hl=en
iTunes app: https://itunes.apple.com/us/app/2fa-authenticator-2fas/id1217793794?mt=8