In addition to being insecure, this feature is incredibly inconvenient for people like me who live in rural areas where we sometimes have wifi access, but not cell phone service (or vice versa). I go to log in on my wifi, but then my cell phone never receives the code because I don't have service. I have to drive 30 minutes to the nearest town and go to a library to get both wifi and cell phone service at the same time. This feature has made PayPal more or less unusable to me. In general, I wish any tech provider would ever consider the limitations that people living in rural areas have to deal with.
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