Prayer Beads

Prayer beads are traditionally used to keep count of the repetitions of prayers, chants or devotions by adherents of religion. Since the beads can be fingered in an automatic manner, they allow one to keep track of how many prayers have been said with a minimal amount of conscious effort, which in turn allows greater attention to be paid to the prayers themselves.
There are three widely accepted uses for prayer beads:

Repetition of the same devotion a set (usually large) number of times. This is the earliest form of prayer beads (the Japa Mala) and the earliest Christian form (the prayer rope). This is also the type of use in the Bahá'í Faith
Repetition of several different prayers in some pattern, possibly interspersed with or accompanied by meditations.

Meditation on a series of spiritual themes, e.g. Islam.

Bahá'í
Bahá'ís recite the phrase "Alláh-u-Abhá", a form of the Greatest Name, 95 times per day, sometimes using prayer beads.

Buddhism
Prayer beads, or Japa Malas, are also used in many forms of Mahayana Buddhism, often with a lesser number of beads (usually a divisor of 108). In Pure Land Buddhism, for instance, 27 beads rosaries are common. In China such rosaries are named "Shu-Zhu" ("Counting Beads"); in Japan, "Juzu". These shorter rosaries are sometimes called 'prostration rosaries', because they are easier to hold when enumerating repeated prostrations. In Tibetan Buddhism, often larger malas are used of for example 111 beads: when counting, they calculate one mala as 100 mantras, and the 11 additional beads are taken as extra to compensate for errors.

Prayer Beads Rosary Beads