You cannot use it on Yom Tov, but a new smartphone app may be about to revolutionise Rosh Hashanah.
Wake Up World allows children — and their young-at-heart relatives — to use a phone or tablet as a shofar.
By blowing into a microphone youngsters can hear the traditional blast of the horn sounded back through the device’s speakers.
The app was created by G-dcast, a San Francisco-based Jewish media production company. It features a main character using the shofar to wake up friends to navigate their way through a story.