Q. My Comet Card balance did not change when I inserted cash into the Add Value machine.


The Add Value machines located in the McDermott Library Copy Center and in the Sonora Lab are managed by the Comet Card Office. 


If your card balance does not change after depositing cash into these machines, contact the Comet Card Office:

Student Service Addition, Second Floor (SSA 12.324)

(972) 883-2495

Email: cometcard@utdallas.edu



Monday - Thursday: 9:00 am - 6:30 pm

Friday: 8:00 am - 5:00 pm

Saturday: 10:00 am - 1:00 pm


  • Last Updated Jan 31, 2017
  • Views 14
  • Answered By Matt Young

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