Place to Leave IPhone at Northridge Test Center?

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Hi all, asking this question for a family member taking the LSAT at CSU Northridge:

She doesn't want to drive to the test center the morning of the LSAT, but can't Uber or Lyft without her cell phone. Do people leave personal items in the hallway outside the test center there, meaning would it be safe to stash in a shitty looking tote bag?

Alternately, any other suggestions on how to get to-from the CSU Northridge campus for the LSAT without a phone or personal vehicle from DTLA?

TIA