http://www.coasttocoastam.com/guest/williams-oliver/5638
http://www.johntitorfoundation.com/
http://johntitor.strategicbrains.com/
http://www.youtube.com/user/whereisjohntitor#p/a/u/2/hyhYnBRHDto
http://www.americanantigravity.com/articles/judgement-day.html
http://www.anomalies.net/object/titororiginalpost.html
When someone walks around with an iPhone or a laptop they're obviously not carrying the whole data network with them. Their portable devices connect to a much larger system of data & energy. Thus, a portable TimeMachine access unit would make sense. However, portable in this case would be like comparing a motorcycle to a ship. Technological devices & other things continue to be developed into various sizes.
Quantum Time Machine...
http://www.technologyreview.com/blog/arxiv/25494/
http://www.ibtimes.com/articles/39125/20100728/time-travel-safe-scientists-say.htm
http://www.daviddarling.info/encyclopedia/S/singularity.html
http://www.dmoz.org/Science/Physics/Relativity/Time_Travel/
http://www.usatoday.com/tech/news/2004-11-05-teleportation_x.htm
http://www.newspostonline.com/science/naked-black-holes-existence-may-breakdown-laws-of-physics-in-universe-2009081365766