This year, many people will have Passover Seder over the internet rather than in the physical company of friends and family. The elements of the Jewish Passover Seder, both ancient ritual and dinner, feel timeless. Traditionally the Passover Haggadah is a physical book with text that participants read from at the Seder table. This year, when friends and families are physically separated, many will celebrate Passover with a virtual Seder and perhaps, their Haggadah on a Kindle or iPad. Matzah is the central symbol of Passover; Passover is even called chag hamatzot, the holiday of matzah.