Ecolabels (also "Eco-Labels") and Green Stickers are labeling systems for food and consumer products. The use of ecolabels is voluntary, whereas green stickers are mandated by law; for example, in North America major appliances and automobiles use Energy Star. They are a form of sustainability measurement directed at consumers, intended to make it easy to take environmental concerns into account when shopping. Some labels quantify pollution or energy consumption by way of index scores or units of measurement, while others assert compliance with a set of practices or minimum requirements for sustainability or reduction of harm to the environment. Many ecolabels are focused on minimising the negative ecological impacts of primary production or resource extraction in a given sector or commodity through a set of good practices that are captured in a sustainability standard. Through a verification process, usually referred to as "certification", a farm, forest, fishery, or mine can show that it complies with a standard and earn the right to sell its products as certified through the supply chain, often resulting in a consumer-facing ecolabel. The last few years have seen two key trends in the ecolabels space. There is an explosion in the numbers of different ecolabelling programs across the world and across business sectors and secondly the proliferation of umbrella labeling programs. Currently, there are around 264 active sustainability standards (according to ITC Standards Map) in 194 countries and 15 sectors, and about 457 ecolabels (according to Ecolabel Index) in 199 countries, and 25 industry sectors. Ecolabelling systems exist for both food and consumer products. Both systems were started by non-governmental organizations (NGOs), since then the European Union has developed legislation for conduct of ecolabelling and also have created their own ecolabels, one for food and one for consumer products. At least for food, the ecolabel is nearly identical with the common NGO definition of the rules for ecolabelling. Label trust is an issue for consumers because some manufacturers and manufacturing associations have set up "rubber stamp" labels to greenwash their products with fake ecolabels. High trust levels can be created when ecolabels apply for governmental recognition as formal Certification Marks (recognized by logos or names with 'CTM', CM or 'CertTM'). Typically this means schemes approved as a Certification Mark have had the government department responsible declare that the scheme has a standard and certifies that they are 'Competent to Certify'. The highest trust levels would