diff --git a/application/models/trial.php b/application/models/trial.php
index c18769c..df3729d 100644
--- a/application/models/trial.php
+++ b/application/models/trial.php
@@ -36,7 +36,15 @@ class Trial extends CI_Model {
 	 * @return bool was the insert successful
 	 */
 	public function create($data) {
-		return $this->db->insert('trials', $data);
+		do {
+			$data['id'] = random_hash();
+		} while ($this->db->where('id', $data['id'])->from('trials')->count_all_results() > 0);
+
+
+		if ($this->db->insert('trials', $data))
+			return $data['id'];
+		else
+			return FALSE;
 	}
 
 	/**