Great question and the answer is yes!  If you are using a device that allows you to dial a phone number you also have the ability to enter a passcode via the touchscreen, you are able to use the Audio Conferencing service.  

Image result for touchscreen passcode

We would caution you to enter the passcode digits slowly with your touchscreen.  We have found that a touchscreen on a smart phone or tablet can be sensitive and it may not register every digit on the audio conferencing bridge.  It will however...if you enter them nice and slowly!