Safe method and system for mobile or wireless computing or communication devices

A system for mobile or wireless communication or computation, said system comprising:

• first unit comprising first antenna, wherein said first unit is mobile or wireless;
• last unit comprising last antenna, wherein said last unit is mobile or wireless;
• and
• said first unit transmits data to said last unit, wherein said data is transmitted from said first antenna to said last antenna,
• wherein said last unit transmits said data to a location outside said system,
• wherein said data is transmitted from said last antenna to said location outside said system,
• wherein transmission of said data between said first antenna and said last antenna is done at first frequency, and
• transmission of said data between said last antenna and said location outside said system is done at second frequency,
• wherein said second frequency is different than said first frequency,
• wherein said first frequency is chosen from a range of frequency which corresponds to a low radiation power absorption for a specific tissue or part of human body, or which corresponds to a low overall radiation power absorption for whole body of a human or a specific animal, and
• wherein transmission of said data between said first antenna and said last antenna is done at first power, and
• transmission of said data between said last antenna and said location outside said system is done at second power, wherein said second power is different than said first power,
• wherein said second power is larger than said first power.

A system for mobile or wireless communication or computation, said system comprising:

• first unit comprising first antenna, wherein said first unit is mobile or wireless;
• last unit comprising last antenna, wherein said last unit is mobile or wireless;
• and
• said first unit transmits data to said last unit, wherein said data is transmitted from said first antenna to said last antenna,
• wherein said last unit transmits said data to a location outside said system,
• wherein said data is transmitted from said last antenna to said location outside said system,
• wherein said first unit is attached to one of the belt, purse, briefcase, jacket, clothing, or suitcase of a user,
• wherein said last unit is attached to said first unit, and
• wherein at the time of transmission, if said first unit is not separated from said last unit by a user, then said first unit, said last unit, or both warn said user, by means of at least one of sound or display.