Door and home security system and method

A door locking method comprising:

• detecting closing of a door;
• keeping a first locking mechanism of said door in an unlocked position for a first predetermined period of time after said closing;
• after said predetermined period of time, changing said first locking mechanism into a locked position, wherein said first locking mechanism may be unlocked using a first key feature;
• after a second predetermined period of time starting from said locking of said first locking mechanism, changing a second locking mechanism of said door into a locked position, wherein the first and the second locking mechanism may be unlocked with a key other than said key feature.

A system, comprising:

• a door including:
• a first locking mechanism,
• at least one driving element enabled to move said first locking mechanism between an unlocked and a locked position,
• a close detecting element configured to detect the closing state of said door;
• wherein said system is adapted for
• detection of the closing of said door via said close detecting element;
• keeping said first locking mechanism of said door in an unlocked position for a first predetermined period of time after said closing;
• changing said first locking mechanism into a locked position via said driving element after said predetermined period of time;
• a computing unit adapted for, unlocking said first locking mechanism when enabled by a key feature;
• and
• a second locking mechanism and at least one driving element enabled to move said second locking mechanism between an unlocked and a locked position, the driving element being arranged to change said second locking mechanism of said door into a locked position after a second predetermined period of time starting from said locking of said first locking mechanism, wherein the first and the second locking mechanism may be unlocked with a key other than said key feature.