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For Keurig the front of the box literally says "Works only with Keurig brand packs". http://familyfoodandtravel.com/wp-content/uploads/2014/09/Keurig-2.0-box.jp

• mikeash 12y ago
  I feel a little dirty defending non-readers, but I don't think that's sufficiently clear or prominent. In the context of a product description, it's ambiguous as to whether that's simply a recommendation or a hard statement of fact. For example, in the world of cars it's common to see the phrase, "Always use genuine $BRAND parts." Of course, other parts work fine, it's just a recommendation. The Keurig statement is a bit stronger, but still not clear. I'd want something more like, "This device uses technological measures to prevent compatibility with third-party packs." And a bit more front and center.