A new software programme for BlackBerries combines Hebrew prayers and technology.
The programme, which provides texts of daily prayers instead of the traditional, printed book, has been dubbed "the JewBerry".
The upgrade costs $30 (£19) and more than 10,000 customers have already purchased the programme, which is not linked to Research in Motion, maker of the BlackBerry.
It has been created by two entrepreneurs who attended New York's Yeshiva University - which combines academic learning with the teachings of the Torah.
Jonathan Bennett, the co-creator, said: "Throughout the day, Jews gather in office-building stairwells and conference rooms to pray, and while sometimes you might not remember your prayer book, no one goes anywhere without their BlackBerry."