As of last week, Saudi women's male guardians began receiving text messages on their phones informing them when women under their custody leave the country, even if they are travelling together.
"The authorities are using technology to monitor women," said Saudi author and journalist Badriya al-Bishr, who criticised the "state of slavery under which women are held" in the kingdom. "This is technology used to serve backwardness in order to keep women imprisoned," she added.
Protests from ordinary Saudis soon appeared on Twitter mocking the decision.
"Hello Taliban, herewith some tips from the Saudi e-government!" read one post.
"Why don't you cuff your women with tracking ankle bracelets too?" wrote a woman identifying herself as "Israa".
"If I need an SMS to let me know my wife is leaving Saudi Arabia, then I'm either married to the wrong woman or need a psychiatrist," tweeted Hisham.
But what provoked the new control method? Local media has reported that controversy caused by the escape of a Saudi woman to Sweden in recent month triggered the move.
The Saudi woman was reported to have converted to Christianity and fled the country, but she denied earlier reports of her conversion and said she wants to return to Saudi Arabia, local daily Al-Yaum reported in July.
It isn't just the Saudi Arabian authorities that want to restrict women's movements. From Payvan Iran News
Lawmakers in Iran are preparing to consider legislation that may drastically alter an adult woman's ability to obtain a passport and travel outside the country.
The draft law, set to go before the 290-seat Majlis, stipulates that single women up to the age of 40 must receive official permission from their father or male guardian in order to obtain travel documents. Under current law, all Iranians under 18 years of age -- both male and female -- must receive paternal permission before receiving a passport. Married women must receive their husband's approval to receive the documents.
Critics say the draft law is the latest attack on women in a country whose Islamic leaders are eager to scale back a burgeoning rights movement.
Iran's civil code overwhelmingly favors fathers and husbands in all personal matters related to marriage, divorce, inheritance, and child custody.
Girls may be legally married as early as 13, and some lawmakers argue the age may, under Islamic interpretation, drop as low as 9. All women require permission from a male guardian to marry, regardless of their age.
Under Iranian law, women are also strictly compromised in terms of rights to compensation and giving legal testimony. The draft law on passports and travel comes just months after Iran announced it was closing dozens of university-level courses to women across the country.