DreamMaker (NovaDreamer), REM-Dreamer, Astral Catapult, among many others. Since the use of these devices does not guarantee increased success in practice, investing money in the technology is not recommended. If a practitioner is curious about cueing technologies, similar devices may be constructed at home using a special computer program and a run-of-the-mill optical mouse. Designs for a homegrown setup are easily located on the Internet. Another do-it-yourself way of experimenting with cueing is through the use of a computer, a music player, or even the alarm clock function on a mobile phone. The practitioner saves short sounds or phrases, played as an alarm every 15 to 30 minutes while sleeping. These sounds will signal the practitioner to wake up and attempt indirect techniques. If the practitioner decides to use cueing technology, several fundamental principles should be considered as results will be less likely if they are ignored. First, mindmachines should be used no more than twice a week. Otherwise, too high a tolerance will be built up, rendering the machines ineffective. Second, use cueing technology in combination with the deferred method, which was covered in the section on indirect techniques. It is better to sleep for six hours without distraction and then, after sleep has been interrupted, put on a sleep-mask or earpiece and continue sleeping. Sleep will be light for the remaining two to four hours as there will be more REM sleep, making it easier for the mind to detect cueing signals. Finally, master indirect techniques before making use of cueing technologies to attain dream consciousness and subsequent phase entrance. WORKING IN PAIRS Working in pairs is considered the second most effective non-autonomous method of entering the phase. One practitioner is to be the active one, and the other fills the role of helper. The active practitioner attempts to enter the phase while the helper provides various types of support to this end. For example, the active practitioner lies down in bed while the helper stays nearby, waiting for the active one to