It's not clear to me how these warrants are "automatic". FTAmendments:

"a magistrate judge [...] has authority to issue a warrant to use remote access to search electronic storage media [...]" (emphasis mine)

IANAL, though; could someone who knows more explain what's going on? How will the procedure and requirements for obtaining a warrant for such "remote access" differ from those for searching, say, a house?

Edit: as I typed, slapshot posted some helpful explanation.