The issues around conducting business on Shabbos even without electronic means. Online ordering and subscriptions. Is there a kinyan (acquisition) when no physical object is involved, especially when there are intermediaries such as CC processors? Hischaivus (obligation) might be different than an outright purchase and transfer. On the internet, the shomer Shabbos seller is completely passive on Shabbos. Beginning the transfer process before Shabbos - Rabbi Akiva Eiger's controversial responsum. Examples of permitted erev (eve of) Shabbos deals. Long before the internet there were vending machines.