Sixto Brillantes remarked that padlocks are bulky and expensive, as compared to plastic seals cannot be tampered with and are cheaper. The commission expects to save more than 50% if plastic seals will be used; plastic seals would cost the commission P14 million, while padlocks would have cost them P34.2 million. The commission also announced that voters would no longer place their thumbprints on the ballot; instead signatures would be used. On January 23, the commission announced that it will be regulating the use of political colors, logos and insignias during the campaign. It monitored television personalities on whether they are being paid to wear colors that are connected to certain candidates. The commission also imposed a right of reply provision, that would give equal time and space for charges against candidates. This was also the first time the commission imposed the rule; the rule has been heavily opposed by the press, but Commission Rene Sarmiento said the rule balances the freedom of expression and public interest. On mid-April, the Supreme Court issued a temporary restraining order on limiting the airtime of political advertisements by candidates by the Commission on Elections. Voting 9–6, the high court favored the petition by Team PNoy senatorial candidate Alan Peter Cayetano to halt the implementation of Resolution No. 9615 and its amendment, Resolution No. 9631. The airtime limit presently stands at an aggregate of 120 minutes in all TV networks and 180 minutes in all radio stations for all national candidates and an aggregate of 60 minutes in all TV networks and 90 minutes in all radio stations for all local candidates. Sixto Brillantes, dismayed and the high court rulings adverse to the election commission threatened to resign but later relented after a meeting with President Aquino. Source code Smartmatic, the source of the machines that were used in the automated elections, is embroiled in a dispute with Dominion Voting Systems over the ownership of the software that were used by the machines. This source code is mandated to be released by law. By early April, chairman Sixto Brillantes said that the deal to release the source was "97 percent" of being completed. However, on late April, Brillantes said that "I’m no longer interested because it’s too late already. Election day is so close and even if they give us the source code now, it can no longer be reviewed for lack of time."