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In page Holographic data storage:

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The three main companies involved in developing holographic memory, as of 2002, were InPhase and Polaroid spinoff Aprilis in the United States, and Optware in Japan.[2] Although holographic memory has been discussed since the 1960s,[3] and has been touted for near-term commercial application at least since 2001,[4] it has yet to convince critics that it can find a viable market.[5] As of 2002, planned holographic products did not aim to compete head to head with hard drives, but instead to find a market niche based on virtues such as speed of access.[2]